Questions regarding the use of the Fingerprint Authentication API, introduced in Android 6.0 Marshmallow (API level 23).
Questions tagged [android-fingerprint-api]
323 questions
1
vote
2 answers
"fingerprintManager!!.isHardwareDetected" always return true
I want to know, the device on which my app running is support fingerprint or not.
But
if(!fingerprintManager!!.isHardwareDetected)
{
Toast.makeText(context,"Your device doesn't support fingerprint authentication", Toast.LENGTH_SHORT).show()
}…
Phone Lin
- 19
- 2
1
vote
1 answer
Is there anyway to identify which fingerprint used for unlocking/ accessing?
Suppose i've enrolled 5 fingerprints in my phone. I need to check which of the 5 fingerprint is used for login to my application. Or any way to check the fingerprint if it's not the primary fingerprint.
Manoj Perumarath
- 9,337
- 8
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- 77
1
vote
0 answers
Creating new Android fingerprint for authentication
I'm trying to make app that use fingerprint authentication to check attendance for employee. the app uses device_id, user name, location, time and send them to back end if authentication successful.
The problem is that it accept any fingerprint…
Mohamed Wessam
- 167
- 2
- 12
1
vote
1 answer
How to use native fingerprint scanner UI in android devices?
Requirement : How to use native fingerprint scanner UI for onscreen sensor android devices (like Samsung s10 plus).
Working flow of fingerprint authentication is understandable. But is there any method or libraries available for obtaining native…
SARATH V
- 500
- 1
- 7
- 33
1
vote
1 answer
How does Fingerprint API know it's been called?
I'm trying to learn how to implement a fingerprint API.
In one of fingerprint guides, it gave me a code
@RequiresApi(api = Build.VERSION_CODES.P)
public class BiometricCallbackV28 extends BiometricPrompt.AuthenticationCallback {
private…
Carol Ward
- 699
- 4
- 17
1
vote
0 answers
isGestureDetectionAvailable() always returns 'FALSE' on android 28
I have built an app which lets the user control their scrolling action using the fingerprint sensor.
It used to work earlier until some weeks back, where I found that method: isGestureDetectionAvailable() always returns 'False' after starting…
lucifer_ved
- 11
- 4
1
vote
0 answers
java.security.UnrecoverableKeyException after user removes pin patterns and adds pin and fingerprint
I am getting exception for below code
try {
mkeyStore?.load(null)
val keyspec = mkeyStore?.getKey(KEY_ALIAS, null) as SecretKey
} catch {
try {
mkeyStore?.deleteEntry(KEY_ALIAS);
} catch (ex:…
Mangesh Kadam
- 587
- 5
- 19
1
vote
0 answers
FingerprintManager - KeyPermanentlyInvalidatedException not triggered in Samsung with new Fingerprints
I'm using FingerprintManager for login process. I'm expecting a KeyPermanentlyInvalidatedException exception when user adds a new Fingerprint to the existing set. I use this exception to show a appropriate dialog to user during login.
In Samsung…
sha
- 1,410
- 2
- 18
- 37
1
vote
1 answer
Identify different users on a single android device using Fingerprint
I am facing an issue where I have to be able to identify users on a single android device using fingerprint alone. The users that will scan their fingers on said device will not have registered fingerprints on this device.
I read that android does…
Ruan
- 175
- 1
- 9
1
vote
1 answer
Enable fingerprint service again after successful authentication
I have implemented login using finger print authentication and it works well.
Below is the Activity that calls the authenticate method:
FingerPrintActivity
onCreate(){
… //Code to initialize the fingerprint manager
FingerprintHandler…
Boron
- 99
- 10
- 34
1
vote
0 answers
Display in-display fingerprint sensor animation
I create an application that use biometric authentification.
Like you know Oneplus published new smartphone with in-display fingerprint sensor (OnePlus 6t).
I would like display the animation of fingerprint sensor when I use fingerprint manager,…
Elodie
- 13
- 1
- 3
1
vote
0 answers
Fingerprint in Android
I am curious whether we can share encrypted keypair generated with fingerprint template to the server in android or not. If so, then
I want to enroll the fingerprint first
Store the keypair to server
And at the runtime, I want to verify the…
Vikash Sharma
- 60
- 2
- 9
1
vote
1 answer
Android adding fingerprint support excludes some devices in play store
My android app supports minimumSDKVersion 19. Later we added fingerprint support and with following permissions
Santhosh_pulliman
- 2,119
- 6
- 30
- 47
1
vote
0 answers
BiometricDialog in Android P causes Memory Leak
I have implemented Biometric Dialog for FingerPrint Authentication in my App.
I have borrowed the code from the following medium post
FingerPrint Authentication
I keep getting memory leak. Following are the screenshots
enter image description…
BraveEvidence
- 53
- 11
- 45
- 119
1
vote
1 answer
Integrating R307 fingerprint scanner with Android
In my application I need to capture and store fingerprint data and use it for authentication. As Android fingerprint API does not provide functionality to store fingerprints per user, I have decided to use external scanner. I am willing to use R307…
Kapil Yamakanmardi
- 133
- 1
- 1
- 6