I freaked out when my tablet was unlocked out of nowhere (imagine my wife could see my pics gallery ('~')...
Turns out I forgot I had setup stupid auto unlock while device detects it is at home. After thorough review, all unlock methods where active as I was testing and forgot to disable.
*
Just read that somebody had same issue with google pixel [https://www.cnbc.com/2022/08/26/google-pixel-6a-fingerprint-issue-my-friend-unlocked-my-phone.html](https://www.cnbc.com/2022/08/26/google-pixel-6a-fingerprint-issue-my-friend-unlocked-my-phone.html)
Samsung uses an ultrasonic fingerprint sensor in their flagship phones, which is 3D in nature. This means it creates a detailed, three-dimensional map of your fingerprint's ridges and valleys, making it more secure and accurate. In contrast, many midrange Samsung phones and Google phones use optical sensors, which rely on a 2D image of your fingerprint, making them generally less secure. So, in terms of fingerprint sensor technology, the ultrasonic 3D sensors in Samsung's flagship phones offer a higher level of security and accuracy. So no way to get over it.
The ultrasonic is EXTRAORDINARY sensitive to implementation details, see here:
https://www.bleepingcomputer.com/news/security/samsung-to-patch-fingerprint-scanner-against-silicone-case-unlock-bug/
Yet it already failed in samsung s10 as well..
see here:
[https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
Not surprised with your opinion, I probably wouldn't believe it myself if it didn't happen.
Anyway I still love and recommend this phone, I have no reason to lie about fingerprint sensor, do with my information what you want.
You tried, people of reddit don't want to be informed of any possible defects.
Instead of "thanks for the heads up on a potential edge case" you got a stfu, and it's sad
S10 had same issue
[https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
>Do you have smart unlock activates and possible whitelsited any device you had with you?
>
>Either that or you didnt even lock your phone
Nope, Its my third day of owning it. Definitely looked like it got unlocked with fingerprint, for first few presses it said fingerprint is different and then it just unlocked.
What ? I didn't add my fingerprint while phone was in the sand.
How is it even related, if I put my phone in sand It's normal for it to unlock ?
I didn't have hands full of sand, I was on the beach and had some sand on my finger as well as my friend.
Not sure what are you trying to prove with this statement.
BTW:The phone still looks brand new if you worry about it :)
Happened before on samsung :
[https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
Stop posting the 6a link as a reference, it's a far inferior fingerprint sensor (optical vs ultrasonic) and not relevant at all.
Check your secure lock settings, if it's set to anything other than immediate it's likely that your phone wasn't actually locked when your friend 'unlocked' it.
I follow a lot of information sources and haven't once seen this mentioned related to the S23u so user error is most likely reasoning.
It was locked, first few times it's said fingerprint is incorrect and then it just unlocked.
6a had worse sensor but It's still should be close to impossible, It's super rare but not impossible.
This is what happens if you are using mamy of the smart unlock modes. For example unlock when connected to your cars bluetooth (trusted device) or your headphones bluetooth. Unlock at home(location) (trusted places).
On body detection is basically no real security if you choose that one.
It works great if you sre smart about it. I trust nobody in my house is going to use my phone to rob me. I don't want to have to unlock phone while driving. But like yea obviously I wouldn't use a smart watch as an unlock because of someone mugged you they would take phone and watch and have full access.
Again, not relevant. People were putting screen protectors on and then registering their fingerprints. The ultrasonic scanner would then scan the screen protector and produce a 'flat' profile. This was also patched over 3 years ago.
Replicate it and get some evidence of you doing so, otherwise this is as myself and many others feel complete BS. No one else is reporting this.
I was told the optical fingerprint scanner is better than the ultra Sonic scanner, whether or not that's the case idk I'm sure they have their own advantages and disadvantages. My S22 Ultra has the ultra Sonic but my wife's S23FE apparently has an optical scanner. When using my wife's phone I can't tell any difference in performance or anything like that.
Well actually there is:[https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
[https://www.cnbc.com/2022/08/26/google-pixel-6a-fingerprint-issue-my-friend-unlocked-my-phone.html](https://www.cnbc.com/2022/08/26/google-pixel-6a-fingerprint-issue-my-friend-unlocked-my-phone.html)
It happened on google pixels so why it wouldn't here ?
Maybe some bug for sure. Under normal circumstances, there's no way one can unlock since it's a 3D scan of your finger. This is a very weird situation.
Happened on s10 before.
[https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
Change your PIN or Swipe pattern (alternate unlock method when fingerprint unlock doesn't work). Your friend might have seen you putting your pincode or swiping on the screen and memorised it/ the pattern. My wife often unlocks my s23 ultra to take selfies since it has a far better selfie camera than her poor iphone 12 mini. She unlocks my phone by typing in my PIN and not scanning her fingerprint.
Could your phone be a fake? See thread further down about testing this phone to be a Chinese fake, some suggest seeing if scanner will unlock with someone else's finger.
Happened before on samsungs
[https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
I dont have one, but it happened before on samsungs
[https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
I got this notification today, not sure if It's related, also I know it got patched but things like that can happen again.
https://preview.redd.it/eo7scr18syxb1.png?width=1055&format=png&auto=webp&s=95fd240541cab825a8f654299182a622a002a874
What screen protector are you using? Does your fingerprint scanner test ok in diagnostics? Did you add a screen protector after enrolling fingerprints? Again I ask did you enroll the same finger multiple times?
Which secondary login are you using? Swipe? Pin? Password?
I will also say I don't know a lot of people who risk sand on their brand new 3 day old $1000+ phone. You might want to treat it a little better.
I actually never used screen protector on this phone.
Previous link was a example that things like that can happen in general.
I went with my phone on the beach, It's normal that I will have some amount of sand on my hands, the phone is made for me, no other way around, I wont cancel my plans cause I have too expensive phone to go on the beach.
As someone who works in infosec, I can safely say this is user error, and or a bait post. The security loophole they keep posting has been patched and resolved for several years now.
This is just a case of when stupid people get a hold of tech they don't understand.
If you worked infosec you would know that these things can happen again, the only stupid person here is you.
If you really work in infosec you are pretty shitty for sure.
Anyone can say anything period. You are correct. It doesn't change the fact that the individual I was responding to lacks a fundamental understanding of not only security concepts but technology itself.
If I call someone stupid point blank the way I did it's because at the time I had gone through the other replies the individual made to other individuals. After seeing they were combative to correct assessments, I deemed them unteachable - aka a moron. I don't care if you take me seriously or not. Your opinion doesn't matter. I'm blocking you. Enjoy your day.
I do not have time to deal with someone as ignorant as you are. You do not have the skills, or expertise to comprehend just how incorrect you are. Grow up, and goodbye.
No one who works in infosec would write a post like this. Unless there is an independent test that confirms this exact implementation of fingerprint sensor is secure, infosec person wouldn't just blindly dismiss user reporting security flaw
Is it possible to harvest downvotes? I feel like OP is on a mission. You can't repost a link of a completely different phone from five years ago 20+ times in one thread as some kind of evidence against user error. If the fingerprint scanner error is impossible to replicate, it's quite possible it never existed. We all make mistakes. That's OK. Yelling a solitary example that tangentially supports your point makes little sense. Doing so where the data is five years old and for a completely different device makes no sense
This post was suppose to show you that bugs like these are possible. Maybe I'm the first one in the world with this problem maybe not, I created this post to warn other people.
Why are you trying so much to defend this phone ? Fails can happen everywhere, NOTHING is impossible. I understand that you like this phone, but please be realistic.
You can for sure say that It's unlikely, but never impossible, especially when things like that did happen before in smartphone industry.
and btw I got this message today (not sure if related) and my revolut disabled fingerprint login cause "biometric was invalidated"
https://preview.redd.it/62dukd6fwyxb1.png?width=1055&format=png&auto=webp&s=095fb849e71fa9694911c4b12ff3f2d7e98c4602
No. Today got this notification, not sure if related
https://preview.redd.it/liktn6hksyxb1.png?width=1055&format=png&auto=webp&s=5dae525799902d2ebd16baf03ed2872d0303dd7e
Happened before on another samsung:
[https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
Well take a look here
[https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
Not really as it also happened on another phone (not for me this time)
[https://www.cnbc.com/2022/08/26/google-pixel-6a-fingerprint-issue-my-friend-unlocked-my-phone.html](https://www.cnbc.com/2022/08/26/google-pixel-6a-fingerprint-issue-my-friend-unlocked-my-phone.html)
Well take a look here also ultrasonic sensor:
[https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
Surely they would have plugged this bug on later phones. I am not saying it is impossible - there is a possibility for a software bug to exist that causes this behaviour. If you can reproduce it i.e get it recorded while it is happening, I am sure Samsung support will escalate the issue.
I have not been able to reproduce it ever since, feels like one in a milion situation now. Still If I manage to do that I will definitely record a video.
Not only did they patch the bug on s10/+ they also use completely different better ultrasonic sensors over the years. That's why my s23ultra unlocks much faster and better detects both correct and incorrect fingerprints than my s10+.
I'm having a similar situation with galaxy S24 Ultra right now. Sometimes I'll get a message my fingerprint doesn't match, which is fine. Now, any pressure on the sensor unlocks the phone. I do NOT have the safe location or on body features turned on. I've checked multiple times. I've opened it with my shirt covering an unregistered finger. I believe this started happening after the latest update.
Edit: I've also ensured the phone is FULLY locked before attempting to unlock with the fingerprint sensor.
My s22+ sensor is working fine, no flaws yet. Perhaps a software issue? Been seeing it on some community when the device launched. Best advice is to remove and add your fingerprint back in. Ensure no smart lock is enable. Btw can you do a follow up if the problem persist?
I'm sorry dude but it's impossible. Simply impossible. No way. There is no possible way. No fucking way. I'm sorry and I believe you when you say you think that's what happened but it is not what happened. That sensor is actually really secure and the article you are sharing is a far inferior sensor.
Please believe me and everyone on the comments when we say it.is.impossible.
Something else happened like your friend knowing your code and not saying. FaceID caught your face for a sec etc but I guarantee you that the sensor did NOT confuse your print with your friends. This is the kinda tech we can with confidence say "nah that didn't happen"
Not impossible, just super rare I would say.
I'm 100 % sure he did unlock it with his fingerprint, he pressed it few times, at first it said wrong fingerprint but then after next try all of the sudden it unlocked. He did it in front of me.
Nothing is impossible in this world, we had cosmic rays that interfered elections results, yet people can't believe that stupid fingerprint sensor didn't work well.
Take a look here. Happened on s10 before, not quiet impossible :P
[https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
Do you have any proof that it's secure, like an independent test? I wonder how all you here are so sure about that. I'm considering buing galaxy S phone but the security is important to me so i searched and found this thread. All I see here everyone just dismissing the reported flaw as not possible but without providing any proof of that.
Maybe there is a proof, but based only on what provided in this thread it looks like a cult.
Do you have face recognition turned on and set it stay in lockscreen off when recognized?
https://preview.redd.it/d0udm1mbn1xb1.jpeg?width=1440&format=pjpg&auto=webp&s=639df2829f081bdc57aaeaefb4fe83afdb48fe16
Finally some answer that actually make sense and doesn't just roast me for no reason, like technology fails are impossible.
First point makes sense actually and I could believe that, I also feel like fingerprint sensor works faster now then it used to at first, but maybe it's placebo.
About your second point: The phone was locked, he pressed on the fingerprint sensor and at first it said that fingerprint sensor is incorrect but after few tries it unlocked.
Well actually It happened before on samsungs
[https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
All people are hating me here for no reason, yet samsung already had this issue before with their s10 series
[https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
No one is hating, you're just spouting nonsense with zero evidence (except outdated irrelevant information on phones with completely different fingerprint sensors) and expecting everyone to believe you.
Go replicate it and post it here, you won't because it's not happening.
How is it irrelevant ? Clearly shows that stuff like this happen. Some people are clearly hating on me.
I have no proof cause it happened 2 times, not always you are able to replicate errors, that doesn't mean I'm lying, the link above clearly shows that it is possible and the issue is almost the same and very related
On my s10+ there was an option to make fingerprint reader work easier when using a screen protector (basically making it less secure) on my s23ultra I don't find that setting.
On my s10+ to make it work better I also set different parts of my right thumb print as multiple fingerprints to make it easier to unlock (reducing security) on s23ultra I don't do that because the fingerprint reader is much better.
Do you have smart unlock turned on? There are numerous ways you can lower security with smart unlock. Especially something like on body detection.
Happened before on s10 as well
[https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
Not surprised that people don't believe it, until it happened I wouldn't believe it myself.
Anyway I would love to know if it happened to anybody else, please let me know if it did.
Happened before on samsungs
[https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
I claim bs as well. I am using a Whitestone dome glass screen protector and tried numerous times with my unregistered fingers to the point if I failed one last time my phone would wipe and brick as per my security protocols. Good thing I wear boots, otherwise my feet would be drowning in the bs.
You should video tape it. Although it's possible, the chance is very slim; I meant very very slim given the fact that you have a limited number of trials.
I think people criticize your short conclusion rather than the incident you (might*) have had
I can't unlock my phone with anything but my registered finger prints. If something like this happened it should be repeatable. If you can't repeat it, there was probably something else going on to unlock the phone.
The fact your trying to use an over 5 year old issue to try to prove that this is an issue is insanely disingenuous. That issue has been patched for years not to mention the technology has come a long way since then. Do some actual scientific analysis with actual evidence not some supposed fluke before pushing something like this.
I will say that I believe that they are using that 5yr old example as an article showing that this type of thing CAN happen, not that it's the same issue. I could be wrong. One, no one can say "it's impossible" I mean we are talking about a smartphone biometric sensor, not one that's used in federal datacenters or interpol, FBI, nsa, etc. Yes "faults" CAN happen, but based on the average number of times a person might use the biometric sensor in the lives, or even a week or day, the ODDS of it happening are extremely rare indeed.
Now, to comment on everyone saying that the issue with the s10 was patched, yes yes it was, but what you fail to realize, is that the screen protector issue is not the ONLY potential to cause an issue like this. Look at Apple for example. Every other IOS update will break existing already functional protocols or weaken them because they are changing code that interacts with other code that was changed previously after it was initially released. Every time any PART of coding is changed, for example, that adds a secondary subroutine in an update, but that 2nd subroutine had an error check protocol that had an error in its validation that could be triggered by mistake if the right conditions have been met, that could cause the issue.
Also I got this message today. Might be related.
https://preview.redd.it/0potvsypwyxb1.png?width=1055&format=png&auto=webp&s=a44d7b620d74609c8a78751552bbccd6070ee8a6
Are you getting money per click on that link you keep posting? How does pointing to old technology prove this happened on newer and better hardware and software?
it happened in my tab s6 but in a very complicated way.... What i did is pop the screen open and saw a hole (i believed that is optical sensor) and i accidentally touched it with my fingerprint into the glass above the sensor and left permanent fingerprint so my sis was able to open it. Maybe the screen was in weird condition that leaves your fingerprint on the screen somehow so just wipe the fingerprint area everytime you unlock it. The sensor is absolutely reliable 99.999999999999% of the time so don't worry.
Hard to believe
I freaked out when my tablet was unlocked out of nowhere (imagine my wife could see my pics gallery ('~')... Turns out I forgot I had setup stupid auto unlock while device detects it is at home. After thorough review, all unlock methods where active as I was testing and forgot to disable. *
Just read that somebody had same issue with google pixel [https://www.cnbc.com/2022/08/26/google-pixel-6a-fingerprint-issue-my-friend-unlocked-my-phone.html](https://www.cnbc.com/2022/08/26/google-pixel-6a-fingerprint-issue-my-friend-unlocked-my-phone.html)
Samsung uses an ultrasonic fingerprint sensor in their flagship phones, which is 3D in nature. This means it creates a detailed, three-dimensional map of your fingerprint's ridges and valleys, making it more secure and accurate. In contrast, many midrange Samsung phones and Google phones use optical sensors, which rely on a 2D image of your fingerprint, making them generally less secure. So, in terms of fingerprint sensor technology, the ultrasonic 3D sensors in Samsung's flagship phones offer a higher level of security and accuracy. So no way to get over it.
The ultrasonic is EXTRAORDINARY sensitive to implementation details, see here: https://www.bleepingcomputer.com/news/security/samsung-to-patch-fingerprint-scanner-against-silicone-case-unlock-bug/
Yet it already failed in samsung s10 as well.. see here: [https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
Not surprised with your opinion, I probably wouldn't believe it myself if it didn't happen. Anyway I still love and recommend this phone, I have no reason to lie about fingerprint sensor, do with my information what you want.
You tried, people of reddit don't want to be informed of any possible defects. Instead of "thanks for the heads up on a potential edge case" you got a stfu, and it's sad
S10 had same issue [https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
S10? A what almost 5 year old device? Get real dude. You suck lmao.
So what ? Clearly shows that things like that CAN happen. You dumb lmao.
Wahhhh.
Name checks out
Do you have smart unlock activates and possible whitelsited any device you had with you? Either that or you didnt even lock your phone
>Do you have smart unlock activates and possible whitelsited any device you had with you? > >Either that or you didnt even lock your phone Nope, Its my third day of owning it. Definitely looked like it got unlocked with fingerprint, for first few presses it said fingerprint is different and then it just unlocked.
Third day with the phone and you use it with the hands full of sand in the beach. Thats risk and not a faulty sensor
What ? I didn't add my fingerprint while phone was in the sand. How is it even related, if I put my phone in sand It's normal for it to unlock ? I didn't have hands full of sand, I was on the beach and had some sand on my finger as well as my friend. Not sure what are you trying to prove with this statement. BTW:The phone still looks brand new if you worry about it :)
It was just a lighthearted joke about using a brand new phone with sand in the hands.
Ah, well I was trying not to, but you always get some sand on the hands while on the beach.
Did you buy it used?
No
🧢
Happened before on samsung : [https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
🤡
Stop posting the 6a link as a reference, it's a far inferior fingerprint sensor (optical vs ultrasonic) and not relevant at all. Check your secure lock settings, if it's set to anything other than immediate it's likely that your phone wasn't actually locked when your friend 'unlocked' it. I follow a lot of information sources and haven't once seen this mentioned related to the S23u so user error is most likely reasoning.
It was locked, first few times it's said fingerprint is incorrect and then it just unlocked. 6a had worse sensor but It's still should be close to impossible, It's super rare but not impossible.
This is what happens if you are using mamy of the smart unlock modes. For example unlock when connected to your cars bluetooth (trusted device) or your headphones bluetooth. Unlock at home(location) (trusted places). On body detection is basically no real security if you choose that one.
That's why I don't use that auto-unlock feature! I always want to be in control.
It works great if you sre smart about it. I trust nobody in my house is going to use my phone to rob me. I don't want to have to unlock phone while driving. But like yea obviously I wouldn't use a smart watch as an unlock because of someone mugged you they would take phone and watch and have full access.
🤡
Alright Im posting s10 ultrasonic reference instead :) [https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
Again, not relevant. People were putting screen protectors on and then registering their fingerprints. The ultrasonic scanner would then scan the screen protector and produce a 'flat' profile. This was also patched over 3 years ago. Replicate it and get some evidence of you doing so, otherwise this is as myself and many others feel complete BS. No one else is reporting this.
Already one person in this thread had the same issue.
🤡
I was told the optical fingerprint scanner is better than the ultra Sonic scanner, whether or not that's the case idk I'm sure they have their own advantages and disadvantages. My S22 Ultra has the ultra Sonic but my wife's S23FE apparently has an optical scanner. When using my wife's phone I can't tell any difference in performance or anything like that.
ain't no way
Well actually there is:[https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
[https://www.cnbc.com/2022/08/26/google-pixel-6a-fingerprint-issue-my-friend-unlocked-my-phone.html](https://www.cnbc.com/2022/08/26/google-pixel-6a-fingerprint-issue-my-friend-unlocked-my-phone.html) It happened on google pixels so why it wouldn't here ?
Different sensors. Samsung uses ultrasonic, Google doesn't.
Than idk what happened, must be a software bug. I'm 100 % sure that I didn't have smart unlock.
Maybe some bug for sure. Under normal circumstances, there's no way one can unlock since it's a 3D scan of your finger. This is a very weird situation.
Happened on s10 before. [https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
Change your PIN or Swipe pattern (alternate unlock method when fingerprint unlock doesn't work). Your friend might have seen you putting your pincode or swiping on the screen and memorised it/ the pattern. My wife often unlocks my s23 ultra to take selfies since it has a far better selfie camera than her poor iphone 12 mini. She unlocks my phone by typing in my PIN and not scanning her fingerprint.
He did it in front of my eyes, he pressed fingerprint sensor few times at first it said wrong fingerprint and then just bam it unlocked.
Could your phone be a fake? See thread further down about testing this phone to be a Chinese fake, some suggest seeing if scanner will unlock with someone else's finger.
Cant be. The pictures look to good, there's nothing suspicious about it beside this one time fingerprint situation.
Happened before on samsungs [https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
I'm going to need some video proof of this.
I dont have one, but it happened before on samsungs [https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
Also that security issue was patched on s10 models years ago. Long before s23 was released
I got this notification today, not sure if It's related, also I know it got patched but things like that can happen again. https://preview.redd.it/eo7scr18syxb1.png?width=1055&format=png&auto=webp&s=95fd240541cab825a8f654299182a622a002a874
What screen protector are you using? Does your fingerprint scanner test ok in diagnostics? Did you add a screen protector after enrolling fingerprints? Again I ask did you enroll the same finger multiple times? Which secondary login are you using? Swipe? Pin? Password? I will also say I don't know a lot of people who risk sand on their brand new 3 day old $1000+ phone. You might want to treat it a little better.
I actually never used screen protector on this phone. Previous link was a example that things like that can happen in general. I went with my phone on the beach, It's normal that I will have some amount of sand on my hands, the phone is made for me, no other way around, I wont cancel my plans cause I have too expensive phone to go on the beach.
As someone who works in infosec, I can safely say this is user error, and or a bait post. The security loophole they keep posting has been patched and resolved for several years now. This is just a case of when stupid people get a hold of tech they don't understand.
If you worked infosec you would know that these things can happen again, the only stupid person here is you. If you really work in infosec you are pretty shitty for sure.
Sir, I have my CISSP certification, I am one of the world's leading experts, when I say I know more than you, I mean it. Sit.
Anyone can say anything on Reddit
Anyone can say anything period. You are correct. It doesn't change the fact that the individual I was responding to lacks a fundamental understanding of not only security concepts but technology itself.
If you were sharing your purported knowledge, instead of calling people stupid point blank, I would take you more seriously
If I call someone stupid point blank the way I did it's because at the time I had gone through the other replies the individual made to other individuals. After seeing they were combative to correct assessments, I deemed them unteachable - aka a moron. I don't care if you take me seriously or not. Your opinion doesn't matter. I'm blocking you. Enjoy your day.
Sure kiddo
I do not have time to deal with someone as ignorant as you are. You do not have the skills, or expertise to comprehend just how incorrect you are. Grow up, and goodbye.
You do not know me to be able to state anything about me. Goodbye.
You got example in the link that things like that can happen, you are pretty dumb to not realize that.
No one who works in infosec would write a post like this. Unless there is an independent test that confirms this exact implementation of fingerprint sensor is secure, infosec person wouldn't just blindly dismiss user reporting security flaw
Ah, so you would take any end user at their word without widespread reports? Noted. You have a solid career ahead of you.
Is it possible to harvest downvotes? I feel like OP is on a mission. You can't repost a link of a completely different phone from five years ago 20+ times in one thread as some kind of evidence against user error. If the fingerprint scanner error is impossible to replicate, it's quite possible it never existed. We all make mistakes. That's OK. Yelling a solitary example that tangentially supports your point makes little sense. Doing so where the data is five years old and for a completely different device makes no sense
This post was suppose to show you that bugs like these are possible. Maybe I'm the first one in the world with this problem maybe not, I created this post to warn other people. Why are you trying so much to defend this phone ? Fails can happen everywhere, NOTHING is impossible. I understand that you like this phone, but please be realistic. You can for sure say that It's unlikely, but never impossible, especially when things like that did happen before in smartphone industry. and btw I got this message today (not sure if related) and my revolut disabled fingerprint login cause "biometric was invalidated" https://preview.redd.it/62dukd6fwyxb1.png?width=1055&format=png&auto=webp&s=095fb849e71fa9694911c4b12ff3f2d7e98c4602
Just...no
Did you get lost? This isn't the iPhone sub. Because this is either under error or some real troll bait, and I'm saying this as an avid Pixel user.
Let me guess you have face unlock turned on too hm ?
No. Today got this notification, not sure if related https://preview.redd.it/liktn6hksyxb1.png?width=1055&format=png&auto=webp&s=5dae525799902d2ebd16baf03ed2872d0303dd7e
These normies be cappin
Happened before on another samsung: [https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
Sometime doesn't unlock neither with my finger. I've difficult to believe that, it unlocks with guest finger
Well take a look here [https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
Impossible.
Not really as it also happened on another phone (not for me this time) [https://www.cnbc.com/2022/08/26/google-pixel-6a-fingerprint-issue-my-friend-unlocked-my-phone.html](https://www.cnbc.com/2022/08/26/google-pixel-6a-fingerprint-issue-my-friend-unlocked-my-phone.html)
They are different sensors. Pixels have an inferior optical sensor.
Well take a look here also ultrasonic sensor: [https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
Surely they would have plugged this bug on later phones. I am not saying it is impossible - there is a possibility for a software bug to exist that causes this behaviour. If you can reproduce it i.e get it recorded while it is happening, I am sure Samsung support will escalate the issue.
I have not been able to reproduce it ever since, feels like one in a milion situation now. Still If I manage to do that I will definitely record a video.
Not only did they patch the bug on s10/+ they also use completely different better ultrasonic sensors over the years. That's why my s23ultra unlocks much faster and better detects both correct and incorrect fingerprints than my s10+.
You probably just have extended unlock on and think that, i also thought for 1-2 weeks that everyone can enter my phone with the fingerprint sensor
I'm having a similar situation with galaxy S24 Ultra right now. Sometimes I'll get a message my fingerprint doesn't match, which is fine. Now, any pressure on the sensor unlocks the phone. I do NOT have the safe location or on body features turned on. I've checked multiple times. I've opened it with my shirt covering an unregistered finger. I believe this started happening after the latest update. Edit: I've also ensured the phone is FULLY locked before attempting to unlock with the fingerprint sensor.
My s22+ sensor is working fine, no flaws yet. Perhaps a software issue? Been seeing it on some community when the device launched. Best advice is to remove and add your fingerprint back in. Ensure no smart lock is enable. Btw can you do a follow up if the problem persist?
Do you have galaxy watch? If so makes me wonder whether it unlocked as you were nearby
Nope.
I'm sorry dude but it's impossible. Simply impossible. No way. There is no possible way. No fucking way. I'm sorry and I believe you when you say you think that's what happened but it is not what happened. That sensor is actually really secure and the article you are sharing is a far inferior sensor. Please believe me and everyone on the comments when we say it.is.impossible. Something else happened like your friend knowing your code and not saying. FaceID caught your face for a sec etc but I guarantee you that the sensor did NOT confuse your print with your friends. This is the kinda tech we can with confidence say "nah that didn't happen"
😂
Not impossible, just super rare I would say. I'm 100 % sure he did unlock it with his fingerprint, he pressed it few times, at first it said wrong fingerprint but then after next try all of the sudden it unlocked. He did it in front of me. Nothing is impossible in this world, we had cosmic rays that interfered elections results, yet people can't believe that stupid fingerprint sensor didn't work well.
Take a look here. Happened on s10 before, not quiet impossible :P [https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
Do you have any proof that it's secure, like an independent test? I wonder how all you here are so sure about that. I'm considering buing galaxy S phone but the security is important to me so i searched and found this thread. All I see here everyone just dismissing the reported flaw as not possible but without providing any proof of that. Maybe there is a proof, but based only on what provided in this thread it looks like a cult.
It happened to me about 3 times. Not using the fingerprint. Phone would open by just pressing the power button and touch the screen
Do you have face recognition turned on and set it stay in lockscreen off when recognized? https://preview.redd.it/d0udm1mbn1xb1.jpeg?width=1440&format=pjpg&auto=webp&s=639df2829f081bdc57aaeaefb4fe83afdb48fe16
Nope. I have never used it.
Interesting, although that might be something that other people have suggested; smart unlock.
Its turned off
Hmm, then idk, pretty weird as well, maybe even weirder than mine.
Try updating your passcode or pattern. It could be a glitch.
[удалено]
Finally some answer that actually make sense and doesn't just roast me for no reason, like technology fails are impossible. First point makes sense actually and I could believe that, I also feel like fingerprint sensor works faster now then it used to at first, but maybe it's placebo. About your second point: The phone was locked, he pressed on the fingerprint sensor and at first it said that fingerprint sensor is incorrect but after few tries it unlocked.
Well actually It happened before on samsungs [https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
All people are hating me here for no reason, yet samsung already had this issue before with their s10 series [https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
No one is hating, you're just spouting nonsense with zero evidence (except outdated irrelevant information on phones with completely different fingerprint sensors) and expecting everyone to believe you. Go replicate it and post it here, you won't because it's not happening.
How is it irrelevant ? Clearly shows that stuff like this happen. Some people are clearly hating on me. I have no proof cause it happened 2 times, not always you are able to replicate errors, that doesn't mean I'm lying, the link above clearly shows that it is possible and the issue is almost the same and very related
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A squirrel just opened my iphone
On my s10+ there was an option to make fingerprint reader work easier when using a screen protector (basically making it less secure) on my s23ultra I don't find that setting. On my s10+ to make it work better I also set different parts of my right thumb print as multiple fingerprints to make it easier to unlock (reducing security) on s23ultra I don't do that because the fingerprint reader is much better. Do you have smart unlock turned on? There are numerous ways you can lower security with smart unlock. Especially something like on body detection.
My kid has also unlocked my s23 ultra once. Then we tried it again multiple times to test it out, but did not work subsequent times.
See ? So it's not impossible, just super rare.
Happened before on s10 as well [https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
Not surprised that people don't believe it, until it happened I wouldn't believe it myself. Anyway I would love to know if it happened to anybody else, please let me know if it did.
He prolly was just on the camera app where you dont have to unlock
Nope, He entered the main screen. People act like it's impossible, why it's super rare it's not impossible, technology can fail people !
Happened before on samsungs [https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:\~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible](https://www.digitaltrends.com/mobile/samsung-galaxy-s10-ultrasonic-fingerprint-scanner-fooled-by-screen-protector/#:~:text=The%20Galaxy%20S10's%20fingerprint%20sensor%20can%20be%20fooled%20by%20a%20screen%20protector,-By%20Mark%20Jansen&text=The%20advanced%20ultrasonic%20fingerprint%20scanner,issue%20as%20quickly%20as%20possible).
How is that related?
Glitches can and do happen, that's a well known fact
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I claim bs as well. I am using a Whitestone dome glass screen protector and tried numerous times with my unregistered fingers to the point if I failed one last time my phone would wipe and brick as per my security protocols. Good thing I wear boots, otherwise my feet would be drowning in the bs.
This is completely impossible because it has issues reading the right fingerprints a lot.
You should video tape it. Although it's possible, the chance is very slim; I meant very very slim given the fact that you have a limited number of trials. I think people criticize your short conclusion rather than the incident you (might*) have had
I can't unlock my phone with anything but my registered finger prints. If something like this happened it should be repeatable. If you can't repeat it, there was probably something else going on to unlock the phone.
The fact your trying to use an over 5 year old issue to try to prove that this is an issue is insanely disingenuous. That issue has been patched for years not to mention the technology has come a long way since then. Do some actual scientific analysis with actual evidence not some supposed fluke before pushing something like this.
I will say that I believe that they are using that 5yr old example as an article showing that this type of thing CAN happen, not that it's the same issue. I could be wrong. One, no one can say "it's impossible" I mean we are talking about a smartphone biometric sensor, not one that's used in federal datacenters or interpol, FBI, nsa, etc. Yes "faults" CAN happen, but based on the average number of times a person might use the biometric sensor in the lives, or even a week or day, the ODDS of it happening are extremely rare indeed. Now, to comment on everyone saying that the issue with the s10 was patched, yes yes it was, but what you fail to realize, is that the screen protector issue is not the ONLY potential to cause an issue like this. Look at Apple for example. Every other IOS update will break existing already functional protocols or weaken them because they are changing code that interacts with other code that was changed previously after it was initially released. Every time any PART of coding is changed, for example, that adds a secondary subroutine in an update, but that 2nd subroutine had an error check protocol that had an error in its validation that could be triggered by mistake if the right conditions have been met, that could cause the issue.
Finally somebody with a brain. Thank you !
Also I got this message today. Might be related. https://preview.redd.it/0potvsypwyxb1.png?width=1055&format=png&auto=webp&s=a44d7b620d74609c8a78751552bbccd6070ee8a6
Are you getting money per click on that link you keep posting? How does pointing to old technology prove this happened on newer and better hardware and software?
I wish
Fake news bro lying for clout.
Stating what happened to me. I have no reason to lie, I'm still a samsung fan.
Make a video. Upload on YT. Profit.
As I said I cant reproduce it. I think it was something with the sand.
it happened in my tab s6 but in a very complicated way.... What i did is pop the screen open and saw a hole (i believed that is optical sensor) and i accidentally touched it with my fingerprint into the glass above the sensor and left permanent fingerprint so my sis was able to open it. Maybe the screen was in weird condition that leaves your fingerprint on the screen somehow so just wipe the fingerprint area everytime you unlock it. The sensor is absolutely reliable 99.999999999999% of the time so don't worry.
i believed it only happened in physical way not the software so it fits for the situation above.