fingerprint accuracy improvement - Samsung Galaxy A50 Guides, News, & Discussion

For getting little better result for fingerprint scanner.. register ur main finger twice ...and the second time u do it ...do it with different angles...the accuracy will get better... speed is still slow

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[Q] Note 10.1 touchscreen bug or issue whatever it is ? help!

Its been 2 weeks since i bought this tablet. I have a problem since then which is when i use touch screen, while scroolin up and down and stop without drawin my finger, page under my finger vibrates for a few pixels. For example while im using photoshop touch and crop someting to move with my fingers , that cropped piece starts to shake . Does this exist in all devices ? If its not im gonna take the device back to store . Is it a known problem that no one mentions about ? With pen everthing is cool but when I start using my fingers its shaky like 3 4 pixels.
http://forum.xda-developers.com/showthread.php?t=2619898
http://forum.xda-developers.com/showthread.php?t=2491690
http://forum.xda-developers.com/showthread.php?t=2646401
jep it's a very well known issue and pretty much everyone has it. People are pretty sure that it is a software bug that can be fixed in the next update though.
I'm going to wait until the next update hits and hope that it will be fixed, because otherwise the tablet is perfect. Otherwise I'll probably return it as well.
The capacitive touchscreen controller in these tablets attempts to provide touch coordinates that are as accurate as possible. when you place a finger on the screen, you arent touching a single point, but rather a number of points, for which the controller has to determine a center point. For capacitive screens, the calculation of this touch point can vary from one iteration of the calculation to the next as a result of subtle capacitance changes due to humidity, contact pressure, etc. if you load any of a number of test programs that output the touch coordinates, you'll see that they jump around by a few pixels.
What this means is that the driver for the touchscreen doesnt include enough deadband around the touchpoint to eliminate positional jitter. This can be corrected in the driver, but whether a software update will resolve it or not remains to be seen. If the jitter isn't acceptable, I would plan to return the tablet within your applicable return window, rather than count on a software update that may or may not address the problem. Samsung has been slow to respond to these kinds of issues, if they address them at all.
Sent from my SM-P600 using Tapatalk
dpersuhn said:
The capacitive touchscreen controller in these tablets attempts to provide touch coordinates that are as accurate as possible. when you place a finger on the screen, you arent touching a single point, but rather a number of points, for which the controller has to determine a center point. For capacitive screens, the calculation of this touch point can vary from one iteration of the calculation to the next as a result of subtle capacitance changes due to humidity, contact pressure, etc. if you load any of a number of test programs that output the touch coordinates, you'll see that they jump around by a few pixels.
What this means is that the driver for the touchscreen doesnt include enough deadband around the touchpoint to eliminate positional jitter. This can be corrected in the driver, but whether a software update will resolve it or not remains to be seen. If the jitter isn't acceptable, I would plan to return the tablet within your applicable return window, rather than count on a software update that may or may not address the problem. Samsung has been slow to respond to these kinds of issues, if they address them at all.
Sent from my SM-P600 using Tapatalk
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Very good point. The driver seems to try to be very accurate. One my older tablet (Acer A500) many times when using Chrome it would magnify the area where I touched as it couldn't really tell which link I had pressed. It seems with this tablet that almost never happens, almost as if the driver is trying to be as accurate as the pen. Sorry, my fingers are not that accurate! Maybe its a (incorrect) reaction to the high res of the tablet?
The driver should be averaging the touched area to get the touch point, but it should also give some kind of uncertainty so it doesn't seem unnaturally accurate (pixel width finger).
I should have tested this on the note 12 or the tab pro's at bestbuy last night...
dpersuhn said:
The capacitive touchscreen controller in these tablets attempts to provide touch coordinates that are as accurate as possible. when you place a finger on the screen, you arent touching a single point, but rather a number of points, for which the controller has to determine a center point. For capacitive screens, the calculation of this touch point can vary from one iteration of the calculation to the next as a result of subtle capacitance changes due to humidity, contact pressure, etc. if you load any of a number of test programs that output the touch coordinates, you'll see that they jump around by a few pixels.
What this means is that the driver for the touchscreen doesnt include enough deadband around the touchpoint to eliminate positional jitter. This can be corrected in the driver, but whether a software update will resolve it or not remains to be seen. If the jitter isn't acceptable, I would plan to return the tablet within your applicable return window, rather than count on a software update that may or may not address the problem. Samsung has been slow to respond to these kinds of issues, if they address them at all.
Sent from my SM-P600 using Tapatalk
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I agree. This is exactly how it looks like. I understand that the touchscreen needs to be as accurate as possible for the pen. But a simple solution or workaround would be to have a "pen mode" for when the pen is out and a finger mode while the pen is docked in the case.
I'm sure there will be a solution for this sooner or later, especially since samsung is releasing more and more devices with wacom digitizers and stylus. And it's more or an annoyance than a deal breaker for me. There aren't any situations where it keeps me from getting my work done or anything. It's just a little annoying sometimes.
And in my experience samsung is actually quite good with fixing things these days.
Thanks for replies! I guess its the driver too. Comparing with apple , yes they dont offer to much of feature but i guess they are best at what they offer and this is the only problem with samsung. Amazing features that we come across via samsung but no perfection.
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[Tip] Make the fingerprint scanner work better

Hello I would like to share something I found out about the fingerprint scanner, that worked for me and hopefully for you as well.
When I received my Elephone P8000 I was disappointed that the fingerprint scanner didn't work as well as I hoped (about 50% success rate).
First I thought it was the Phone, but actually it was my own fault. and now it works 99% of the time
The wrong way: when adding a new fingerprint, I placed my finger at the exact same spot every time while configuring.
The good way: hold the phone like you normally would when unlocking the phone, and place your finger at slightly different places on the scanner when configuring (do not center your finger at the exact same spot).
I hope this helps.
That's the way I've done it since I bought the phone and my success rate when using the fingerprint scanner must be around 90% (no kidding).
jman0 said:
That's the way I've done it since I bought the phone and my success rate when using the fingerprint scanner must be around 90% (no kidding).
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Same here. Actually, I think my success rate on the fingerprint scanner is higher than 90%.
I'm getting good results from this
Depends on fingers skin too. Scanner dosn't recognise fingers a lot when having dry skin(washed hands a lot in a day) and had normal skin when entering prints.
Thanks for sharing, i getting 90% success rate with this method.

Fingerprint scanner question

How is the speed/accuracy of the fingerprint scanner after the recent updates? Its said to be slow and unreliable at launch time.
Is it now as good or close to the usual capacitative scanners?
barrack1 said:
How is the speed/accuracy of the fingerprint scanner after the recent updates? Its said to be slow and unreliable at launch time.
Is it now as good or close to the usual capacitative scanners?
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Yes it is slow(even after update) especially when you try to unlock when the screen is off (takes 1 second), and on always on display it takes 0.5-0.8 s, sometimes it doesn't recognuze fingerprint. So compared to the usual fingerprint scanner, it's very slow, though it can be improved via updates
ThatZenon said:
Yes it is slow(even after update) especially when you try to unlock when the screen is off (takes 1 second), and on always on display it takes 0.5-0.8 s, sometimes it doesn't recognuze fingerprint. So compared to the usual fingerprint scanner, it's very slow, though it can be improved via updates
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Samsung released another update earlier today that was focussed on the fingerprint reader and it has certainly improved the performance. Comparatively, it now takes half the time it took with the original firmware, though it is still slower than a capacitive reader. More importantly, the accuracy has improved a lot compared to the original firmware and it rarely fails, as long as the finger lands on the right spot.

Fingerprint sensor useless

I have had this phone since September and came from Huawei P30 Pro, before that Honor V10, Huawei P20 which had fast fingerprint sensor and worked 99% of the time first time .
I cannot believe how bad this sensor is in real use, unlock success rate is about 5% no matter how many times I delete and Reregistered all fingers.
I scan my prints and test in the setup and they are acknowledged correctly but once I start using for real to unlock the phone or approve stuff it rarely works.
I have tried all kinds of angles and strengths of press but it's useless.
Running the beta in hope of improvement but it's still useless.
Did I get a bad unit here or is Samsung just totally crap with fingerprint sensors?
Sent from my SM-N975F using Tapatalk
After you've registered your fingerprints.... re-register them to improve the accuracy of the scanner. Also, if you find it sluggish, reduce the animations in the settings...
Sent from my [device_name] using XDA-Developers Legacy app
I am reregistering prints to try and improve and after every update hoping something is better.
As said when setting up and checking it is fine but when I have to use for example with 2FA app to approve a log in it just fails "fingerprint not recognised" before eventually going to pin.
Will try the animation setting and see if that helps.
Sent from my SM-N975F using Tapatalk
for a while, the Note10+ fingerprint reader had a terrible success rate, no matter what "hacks" i used to try to make it better (i.e. multiple fingers, the "test/learning" hack, etc.) — loads of "make sure you cover the entire sensor" and "no match found" etc.
this tip might be crazy, but it does work: MOISTURIZE LIGHTLY.
100% serious.
my right thumb was not able to unlock my Note while i was working at my desk. super frustrating. looked at my hands, thought they were looking dry, so i put a dab of glycerin hand cream on and BANG: every single damn time now, regardless of whether my thumb is vertical or sideways.
I got my Note 10+ today and have spend a long time setting it up. Once I registered my prints I had not issues (unless I didn't press firmly enough on the screen). It's been fine for me thus far.
You shouldn't compare ultrasonic fingerprint sensors that are in their early stages with optical ones that have been out there for years. Ultrasonic is much more secure. And saying that success rate is only 5% means that you either have a defective unit or need to change the way you use it. I have a success rare of no less that 90%... not as accurate and quick as my old note 8 with its optical sensor but I got used to it
I've had no issues with the fingerprint sensor, before or after the update.
AM Radio said:
for a while, the Note10+ fingerprint reader had a terrible success rate, no matter what "hacks" i used to try to make it better (i.e. multiple fingers, the "test/learning" hack, etc.) — loads of "make sure you cover the entire sensor" and "no match found" etc.
this tip might be crazy, but it does work: MOISTURIZE LIGHTLY.
100% serious.
my right thumb was not able to unlock my Note while i was working at my desk. super frustrating. looked at my hands, thought they were looking dry, so i put a dab of glycerin hand cream on and BANG: every single damn time now, regardless of whether my thumb is vertical or sideways.
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heh yeah classic S10+ fingerprint reader from Samsung. I also found the same "you need to lick your finger first. Yeah, it's not a joke. " :laugh:
yep lick your finger first does actually work, if you have dry hands the scanner is mostly trash, use moisturiser/lick/damp your finger and it will work near 100% reliability. basically if you don't have clammy hands it will likely be hit and miss.
actually found myself in bars using the condensation on my drinks to help me unlock the phone, it seems an odd thing but it seems moisture in your skin is a massive deciding factor on it working.

Question Follow up review of the Pixel 6 Pro

Do you agree with his retake?
MArtyChubbs said:
Do you agree with his retake?
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I do
Auto brightness never worked well on any of my Samsung's, uses excessive battery pi$$es off my retinas, so i always use manual control. It's not just a Pixel thing
Personally I rather see a review where the reviewer finds flaws and pick away at them; it shows candor. The endless mainstream reviews of Samsung flagship duds that give them glowing reviews to boost sales are so old and predictable. Reddit gives better reviews
Updates break things. Upgrades destroy worlds.
Leave it be unless you see them working miracles for other users after a couple months. Trust more what individual users and small fry reviewers say than CNET, Tom's Guide, Phonearena, etc.
Take what you got, optimize it, and find work arounds rather than constantly updating and upgrading it. Every time you update and especially upgrades you change the playing field and you can end up starting the optimization/work around process all over again. Like a reoccurring nightmare. Who wants a phone with an identity crisis that's constantly morphing into variants you have no control over?
I want a fast, stable, reliable platform that fulfills its mission. I have no desire to be an unpaid perpetual bataware tester for something I paid big bucks for!
You may not agree with what I just stated. I don't respond to sales/scare hype. I want to see rubber biting into the bloody asphalt not just a cloud of smoke and noise.
Case in point is this N10+ in my hand still running extremely well on Pie. Current load will be 2 yo this June. It's fast, stable with minimal maintenance and bug free. I spend very little time troubleshooting it now. Security is not an issue.
It does exactly what it should be doing, working.
I'm currently looking for another phone as the signal is so poor on this chipset and Google has locked it down so I can't get 5G or Volte even though my network is supported they won't unlock it
I think he needs to RMA his phone, because I did that as well. Amazing experience after it!!
Interesting, i have a Pixel 6 Pro, my wife has a Pixel 6 and my best mate has a Pixel 6 Pro and apart from the fingerprint sensor being a bit off to start with i cant say we have had any problems since the phone came out.
I've never known adaptive brightness work particulaly well on any phone i have owned to be honest so thats just the norm for me.
I agree with his take.
Auto-brightness has been abysmal on this phone since the beginning. It really shouldn't be, not when they're employing two ambient light sensors. It's especially painful because I use the device in dark environments very often (have a baby, use it to play sleeps sounds to him while he falls asleep) and it never assesses the brightness correctly. The torch thing is also a massive irritation, since it ramps the display brightness up to max in a pitch dark setting, then takes an age to eventually move down to a more acceptable brightness, but not without blinding you first.
I've never had this problem with any Samsung device employing dual ambient brightness sensors; on the contrary, I've always found the brightness settings to be close to perfect on these devices, even the ones where the front sensor shifted under the screen.
Signal is a significant weakness on this phone as well. Whenever I pop to the stores, I regularly find myself without signal when inside the store. I have to literally walk out and walk back in to restore some signal in case I need to call my wife or message her. I can honestly say that weak signal is not the biggest issue to me, it's that is just about disappears in places I have had no issue with other devices. And it's also something that seems to be a problem for me with Pixels, at least on my carrier. This is just the worst I've experienced by a long shot and has me pausing for safety reasons.
The fingerprint reader is not great, but it's much less terrible than it was at the beginning. I've not been as impressed with the cameras as I thought I would
There are still weird bugs (Google Assistant randomly pops up from time to time; changing wallpapers causes the quick settings toggles to disappear until you fully open the notification panel; the April update randomly reset all my custom notification tones; app search sporadically stops working; lift to wake and tap to wake still way too sensitive) and Google has actually regressed in some UX aspects (removing the vibrate icon from the main status bar; the internet tile; the choice of UX around the always on display; etc) compared to even Android 11.
Overall, this is still a great device, and fluidity of the experience is second to none. Too bad about the almost unbearable signal and effectively non-functional auto-brightness.
MrBelter said:
I've never known adaptive brightness work particulaly well on any phone i have owned to be honest so thats just the norm for me.
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Adaptive brightness is close to perfect on the S22U. It can be implemented successfully with the right hardware.
hand-filer said:
Adaptive brightness is close to perfect on the S22U. It can be implemented successfully with the right hardware.
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thats why i said on any phone i have owned.
The voice to text is strangely broken on this phone. I see many people complain about it specifically on the 6, whereas all previous pixels had excellent voice text accuracy. I still use it primarily for messaging and just accept that people think I'm illiterate.
I'd agreed with the hardware issues. The antenna isn't as good as any of Qualcomm's recent stuff in signal and battery, and the fingerprint reader (which I'd probably rate as "fine" at this point) is still a notable dropoff from the one on the back of the phone.
But there's other complaints from that video that have never been a problem here. Wi-Fi Calling is the one that sticks out that's been great on my device.

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