Followed this guy for a while very interesting videos ,but one thing stick out on this one at around 10 mins on ,if you have to have a new screen fitted fingerprint stops working ,until you use fingerprint recalibrate tool which Google provides on line .Just wondering is this could be used to recalibrate finger print sensors for those having issues,tap post for video
Just to add my FP works fine so not willing to risk trying this ,but some one having issues it could be the answer
combat goofwing said:
Just to add my FP works fine so not willing to risk trying this ,but some one having issues it could be the answer
Click to expand...
Click to collapse
The calibration tool, by the looks of it, only tells the system that the new module is verified (by the user). This is because the phone, strictly speaking, doesn't know much about the (black box) fingerprint reader. The reader itself just sends its "signature" (most likely a serial number or something similar), how many fingerprints are registered, and the phone can request a read (which either returns recognised, not recognised, or faulty/impartial read), or a registration.
Simply said, the phone does not have access to the raw fingerprint data, for security reasons. But this can mean that if someone replaces the FP reader with one that has different fingerprints loaded, they could abuse that and unlock your phone with their own finger. By disabling the FP reader when an unknown signature is detected (i.e. you, or someone else, replaced the screen), the user is notified about the change, much like the warning screen during boot if your bootloader is unlocked.
The calibration tool, as such, is the user's way of telling the OS that yes, you've authorised this replacement. It shouldn't make the existing FP reader better or worse.
Ok wasn't sure how it worked just thought it might be worth a try for those having FP issues
As far as I know, Google already said that the calibration tool won't help you get a better result, it's just and solely for people that replace their display and want a functioning FP scanner again (without the tool the phone doesn't recognize the new FP reader of the new display).
Related
Hello,
Anyone else has this problem where the fingerprint scanner barely works (almost unusable) ? I tried many ways to enter the fingerprints but it registers like 1 in 10 tries...
Edit 2: Best solution here: https://forum.xda-developers.com/showpost.php?p=72875604&postcount=18
If that does not solve the issue, also try this:
Edit: solution at https://forum.xda-developers.com/showpost.php?p=71964623&postcount=10
kevinlevrone said:
Hello,
Anyone else has this problem where the fingerprint scanner barely works (almost unusable) ? I tried many ways to enter the fingerprints but it registers like 1 in 10 tries...
Click to expand...
Click to collapse
same here. Samsung makes the worst finger print scanners.
thinking of 4 scan for same finger see if that helps.
Huawei makes the best finger print scanners
kevinlevrone said:
Hello,
Anyone else has this problem where the fingerprint scanner barely works (almost unusable) ? I tried many ways to enter the fingerprints but it registers like 1 in 10 tries...
Click to expand...
Click to collapse
That is not normal, my A5 works 9 in 10 on the first try.
Not a single error in my A3
Mine is totally unusable... any idea?
Well, it seems that I'm not the only one with this problem. Hopefully it can be fixed with an update.
I have to say that my thumb skin is a bit damaged (from doing work on cars, around the house, etc.) but this was never a problem with my S7 Edge. I tried a different finger with healthy skin and it does work a lot better, but still not 100%, it seems to me that the A3 sensor has real issues.
same Problem with my girlfriends A3.
Fingerprint scannner works in 1 of 4 times if youre lucky sometimes doesn't work at all.
She has already made 3 scans with 1 finger but didn't really help
Maybe send it back for warrenty repairs if a factory reset won't work'? I'm sorry but fingerprint sensor should work fine.
Chris.nl said:
Maybe send it back for warrenty repairs if a factory reset won't work'? I'm sorry but fingerprint sensor should work fine.
Click to expand...
Click to collapse
To be honest, I don't think this is solvable via warranty work. I am not sending my almost new phone back just to receive a refurbished piece of thrash. I am putting my faith into a firmware update. The funny thing is, I really like the phone even with this problem, it is very fluid and has even better battery life than the S7 Edge.
So here is a workaround I have found, for those having the issue:
- Instead of using the tip of the finger when adding your fingerprint, use the area just below the tip. In the attached picture, use the area marked with green instead of the one marked with red. It will then work 100%, it's amazing how fast and accurate it is. It's just not very smart like the S7/S8 and other phones and it probably has issues when the skin is not 100% perfect or maybe with pronounced geometric distortions like it is the case when using the finger tip.
Hi folks, a workaround for me was disabling the keep screen turned off, became much more accurate after that
I've got similar problem with always on display. When I turned it off everithyng is fine
I am having similar issues with my phone. I have tried using all three stored fingerprints as just my thumb and I still have trouble getting it to unlock. I do have Always On Display turned on, and I don't really want to disable it as suggested in this thread because it's an awesome feature. Samsung should be able to something as easy as a fingerprint scanner right. Hopefully this is simply a software issue that is patched
hi guys
you lock phone with power key or with widget (like screen off)?
After having the same problem I started turning my thumb much more (even almost fully vertical) during the scanning process. Now it works fine. DHNL
hi actually solved the problem what i did is that factory reset the phone, i schedule a weekly restart, i clean my scanner and i assigned all 3 fingerprints on to the same finger and it worked
Hi folks,
I am experiencing the same issue. I found some relief using a different finger. I have registered three of my fingersprints. For some weird reason only one of the three fingers works acceptably good, the other two are successful very rarely. I therefore recommend you to try with a different finger or several of them to find out which one better works for you.
Good luck !
I can confirm there is indeed a problem with SAMSUNG A5 2017 fingerprint system. The recognition rate can be extremely low in some condition (around 10% positive, meaning almost unusable). This seems to be a software bug
Here is a turn around :
If you record your fingerprint with the screen "always on" function activated , then the recognition rate is extremely poor.
if you unactivate this function during recording process, then the rate is ok (higher than 90%), even if you reactivate the always on function after recoring session
I guess this could be solved by Samsung in the latest firmware A5 (2017) update.
Gautier T., A5 owner
gautierT said:
I can confirm there is indeed a problem with SAMSUNG A5 2017 fingerprint system. The recognition rate can be extremely low in some condition (around 10% positive, meaning almost unusable). This seems to be a software bug
Here is a turn around :
If you record your fingerprint with the screen "always on" function activated , then the recognition rate is extremely poor.
if you unactivate this function during recording process, then the rate is ok (higher than 90%), even if you reactivate the always on function after recoring session
I guess this could be solved by Samsung in the latest firmware A5 (2017) update.
Gautier T., A5 owner
Click to expand...
Click to collapse
The trick seems to be working, thanks !!
kevinlevrone said:
Hello,
Anyone else has this problem where the fingerprint scanner barely works (almost unusable) ? I tried many ways to enter the fingerprints but it registers like 1 in 10 tries...
Edit 2: Best solution here: https://forum.xda-developers.com/showpost.php?p=72875604&postcount=18
If that does not solve the issue, also try this:
Edit: solution at https://forum.xda-developers.com/showpost.php?p=71964623&postcount=10
Click to expand...
Click to collapse
updating to nougat fixes this.
you won.t need the workaround with AOD like on marshmallow
I just saw a good deal on this phone and am about to pull the trigger on it, but am creeped out by the fingerprint scanner, why on earth would anyone want such a thing? If disabling is not possible could the user tape over the nefarious thing to "disable" it? There is no way I am giving a phone my fingerprints, so this is a deal breaker for me.
memetix said:
I just saw a good deal on this phone and am about to pull the trigger on it, but am creeped out by the fingerprint scanner, why on earth would anyone want such a thing? If disabling is not possible could the user tape over the nefarious thing to "disable" it? There is no way I am giving a phone my fingerprints, so this is a deal breaker for me.
Click to expand...
Click to collapse
Fingerprint scanner can be used for lots of things
Unlocking the phone instead of entering a pin
Signing into apps
Verifying payment
Its actually very useful
However you do not need to use it - You do not at any stage need to give it or record your fingerprint if you do not want to
You will find that most new phones now come with a fingerprint scanner as some apps like apple pay and banking apps may require fingerprint identification as well as a pin to avoid fraud
Hey thanks for the reply, I didnt say that fingerprint scanning doesnt have some applications, but the risks with it far outweigh any perceived momentary benefit. What happens when the fingerprint data is lost because you know it will be, its just a matter of time. The thing with fingerprints is they are not like passwords, you cant rescue your account with a security question and then change your fingerprints can you? No, once the fingerprint data is lost then that is it, your identity is compromised forever with no possible way of ever securing it again. Cell phones are just about the least secure devices you can buy today. Putting ones fingerprints into it is sheer madness and will all end in tragedy for many people I predict.
My understanding is that the fingerprint scanner button on this phone is necessary for everyday use of the phone, you cant use the phone without using the scanner. So although you may not specifically choose to store your fingerprints you can safely bet that it is scanning your prints and storing them somewhere onboard which means they are accessible to any semi skilled hacker if you lose/ misplace the phone or even just log onto the wrong "airport" wifi.
So again I ask the question, can this functionality be specifically disabled in the UI? If not then it is a deal breaker for me, I wont risk my lifetime identity when there are many many phones out there that dont have this silly ill conceived technology in them, I just happen to like motorolas, my old droid razr m is still goin strong, it just cant do all the latest google tech.
Like I said in my previous post
At no point do you need to enter record or save your fingerprint - If you don't use the fingerprint scanner then your fingerprint will not be stored!
If you are that concerned about it obviously buy a phone that doesn't have one because even if you disable it which you can do if you root the phone and muck about with the build.prop and other files - someone else can just enable it again but who cares because you don't use it and haven't stored your fingerprint so whats the problem?
Yes its theoretically possible for someone to steal your fingerprint - just watch mythbusters and they can fool any fingerprint lock by lifting someones fingerprint and doing some chemical magic to transfer it onto ballistics gel - but thats why you have two step authentication - Fingerprint and a password - much more secure
Thanks again for your continuing contributions, and apologies I must not have explained myself very well. I was hoping for a simple yes or no answer, I didnt really mean to spark a debate on this. You seem to be suggesting that no it is not possible to disable the fingerprint scanner via the UI, but it would be awesome if you could unambiguously confirm that.
And to answer your points, no I am not worried about someone making a plastic finger to hack into my phone. I dont store sensitive information on my cellphone. The worry I have is that the fingerprint scanner is likely always on and always scanning and possibly also recording the scanned biometric data, whether the user enables the feature or not. And if this is indeed the case then its possible that this data could then be exfiltrated from the phone surreptitiously. And once hackers get someones fingerprint data who knows what they can do with it, this year, next year, in ten years or twenty, hell I might even live another fifty years. The point isnt what bad things can I think of them doing today. The point is that once that important biometric data has been lost to hackers or other unscrupulous individuals then there is no way I, or anyone else, can ever secure that data ever again - for however many years I may have left here. And I am stuck with my fingerprints, I cant change them, at least not easily.
Maybe you just led a more sheltered life then me, maybe I am just ridiculously over paranoid about such things. But in my mind it seems like such a no brainer, why take risks with such monumentally sensitive data. A trade off I would be willing to make is if the fingerprint scanning can be unambiguously switched off via the UI. I think that would be enough to ease my paranoia, but it seems that is not the case.
Its a pity, its such a nice phone and 'rola's are usually so well put together.
Anyway hope that clarifies, and thanks again for your input.
memetix said:
Thanks again for your continuing contributions, and apologies I must not have explained myself very well. I was hoping for a simple yes or no answer, I didnt really mean to spark a debate on this. You seem to be suggesting that no it is not possible to disable the fingerprint scanner via the UI, but it would be awesome if you could unambiguously confirm that.
Click to expand...
Click to collapse
There is no on/off switch for fingerprint scanner
It is also there for adidional gesture control - eg you can swipe the fingerprint sensor in different directions to go back, open a certain app etc
Fingerprint gestures can be disabled in the UI but not the fingerprint scanner itself
Unless you goto the security screen and select the option to record fingerprint for unlock it will not record save or do anything with your fingerprint
but to answer your question with a yes or no - the answer is no (based on stock unrooted)
I thought I would update this for the record...
I ended up opting for the G5S instead, for the extra storage, RAM etc. and it turns out that you can operate these phones without ever needing to touch the fingerprint scanner at all.
Seems like an important point which needed to be added to this conversation, for posterity.
So I finally took the jump to Pie. One of the smaller issues I have that I didn't before is when trying to set up my fingerprints again, I get an error on the last press which tells me to try again or try another finger.
Yes, an issue for me also. Sometimes it just does not work and other times it tells me the fingerprint sensor is dirty which it is not. Fingerprint sensor issues have been reported by others too after installing Pie. It does not seem to me to be as common as the notification issues with Pie, (which I also have), but it is talked about. I also did a factory reset a couple days after installing 9.0 which did help a couple of apps to work better but did not help the fingerprint or notification problems.
The fingerprint issue is weird as sometimes it is so bad, I think I will not be able to keep the phone, just will not work at all. Then for no discernible reason it will start working fine. It is not just a pain to have to use another login method every time the phone needs to be woken up, but I also use fingerprint sign in for a few apps and it is much harder to have to enter one of my random 14 character passwords when the fingerprint won't work.
Try to put your Ambient display Always on... see if it fixes the fingerprint problem (Google is aware of this issue) till google issues a permanent fix.
Wasn't that only a workaround for people who had fingerprint lag? I don't think it was for fingerprint reading issues.
I did notice a lot more fingerprint reading errors with Pie then redid my fingers and all has been fine.
itzik_man said:
Try to put your Ambient display Always on... see if it fixes the fingerprint problem (Google is aware of this issue) till google issues a permanent fix.
Click to expand...
Click to collapse
Sent from my Pixel 2 XL using Tapatalk
Dear Friends
A50 current version A505FDDU1ASE3 / A505FOJM1ASE2 / A505FXXU1ASE2, Security patch level 1 May 2019
The issue: very slow FP reading plus Face reading is not good, it can open the device with eye closed face, even with the diagonal angle too, which is dangerous, it means anybody can unlock your phone while you sleep.
I have logged the call with Samsung support and they advised to upgrade to the latest version through the phone, which I did. and asked to delete the registered FP and Face, and re-register it.
I did, the problem remains the same... anybody found a similar issue?
FP reader posts are dime a dozen in this forum. To provide my opinion, the FP reader was extremely poor in March, significantly improved in April and now seems to be working at the level allowed by the hardware.
It takes less than a second to completely unlock using the FP reader, but for that you have to register your FP in the various positions you would normally unlock it and then make small adjustments. Don't follow any guide telling you to register using specific movements. This is what works best for me.
The Face Unlock is extremely insecure as it unlocks with photos and closed eyes. It is there only for convenience.
saifeesl said:
Dear Friends
A50 current version A505FDDU1ASE3 / A505FOJM1ASE2 / A505FXXU1ASE2, Security patch level 1 May 2019
The issue: very slow FP reading plus Face reading is not good, it can open the device with eye closed face, even with the diagonal angle too, which is dangerous, it means anybody can unlock your phone while you sleep.
I have logged the call with Samsung support and they advised to upgrade to the latest version through the phone, which I did. and asked to delete the registered FP and Face, and re-register it.
I did, the problem remains the same... anybody found a similar issue?
Click to expand...
Click to collapse
I have been facing the same issue. I got my phone on my birthday in March month; I was excited about the Samsung A50 device, but when I set the screen lock using fingerprint, it gives delay. Also, I have the latest version of Android 9. Still, it troubles me.
Hi guys,
Lately I've noticed that my fingerprint sensor does not work properly anymore.
Not sure if it's a hardware or software issue?
Though, the test HW for Fingerprint Sensor from Smart Doctor app reports Good status during all tests.
The behavior is strange and not consistent, most of the times it will work fine but from time to time I cannot unlock/wake the phone with the fingerprint sensor, it's not like the fingerprint is not recognized, it's more like putting the finger on the sensor and nothing happens (it doesn't vibrate like is reading it or not) . Not sure if is related to the phone being in standby for longer period, or I don't know ...
I'm more inclined to believe it's a software issue, and seems to have occurred lately after last update to Android 10 (v30f-EUR-xx, phone type LM-G710EM).
I've tried may method, deleting the finger prints and add them again , even did a factory reset but the issue seems to come back.
Do you guys have such issue?
Any idea how to diagnose this further?
dinoc said:
Hi guys,
Lately I've noticed that my fingerprint sensor does not work properly anymore.
Not sure if it's a hardware or software issue?
Though, the test HW for Fingerprint Sensor from Smart Doctor app reports Good status during all tests.
The behavior is strange and not consistent, most of the times it will work fine but from time to time I cannot unlock/wake the phone with the fingerprint sensor, it's not like the fingerprint is not recognized, it's more like putting the finger on the sensor and nothing happens (it doesn't vibrate like is reading it or not) . Not sure if is related to the phone being in standby for longer period, or I don't know ...
I'm more inclined to believe it's a software issue, and seems to have occurred lately after last update to Android 10 (v30f-EUR-xx, phone type LM-G710EM).
I've tried may method, deleting the finger prints and add them again , even did a factory reset but the issue seems to come back.
Do you guys have such issue?
Any idea how to diagnose this further?
Click to expand...
Click to collapse
Make sure your battery isn't swollen. A swollen battery will take out the fingerprint sensor first because it's right on top of the connection.
Hmm, interesting, from the outside I can't feel any difference, the back seem flat.
Exactly the same problem here. But if I check the sensor while it is not working I get a "sensor not respondong error".
Did you solve somehow?
Thank you