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Questions tagged [android-biometric-prompt]

For questions about Android's BiometricPrompt API feature used for biometric authentication.

Reference:

211 questions
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1 answer

Determine what type of biometric hardware is available Android

I'm setting up a biometric login using kotlin. I have it working but I would like to switch out which icon is displayed based on the available hardware, ie. show a retinal scanner icon for retinal scanning, fingerprint for fingerprint scanning…
Sean Calkins
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Problem opening BiometricPrompt android studio

I have a code where I call biometrics for password validation, and it ends up working normally, I always have the expected results when I request, but it ends up generating an error on my console that I would like you to solve, but I don't find it…
Renato Cardoso Crispim
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1 answer

check if the user changed biometric/fingerprint in Android

I am looking for a way to get notify if the user changed his/her fingerprint. I saw this answer here but it wasn't clear how to use "setAllowedAuthenticators" in this scenario. I would appreciate it if someone could help. [update] the updated…
Atheer Abdullatif
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Authentication with Pin or Pattern if no Fingerprint found Android

I am using biometric Authentication method to unlock my app. But if user have disabled fingerprint or if user is using the device which does not support fingerprint, How can I use pin or pattern authentication for them. I was using keyguardmanager…
Zeeshan Shakil
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2 answers

Save sensitive data on Android with EncryptedSharedPreferences and Biometric

I want to store sensitive information like a login PIN. Today with EncryptedSharedPreferences (ESP) one can argue that's enough. But let's say I want to offer the possibility to use Biometrics. This google sample show us how to use…
GuilhE
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1 answer

BiometricPromptCompat: Failed to check device credential. Parent handler not found

I have implemented finger-print Biometric auth in my project. I have set a fallback auth in case user wants to use pattern/pin/passcode by clicking on "Use Password" button. I have done this by using setDeviceCredentialAllowed(true) which works for…
Amey Bhandarkar
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1 answer

BiometricPrompt: BiometricFragment and Activity memory leak

Hello I found 2 memory leaks that I'd like to resolve. After receiving the callback onAuthenticationSucceeded(BiometricPrompt.AuthenticationResult result), I want to setResult() and call finish() on ActivityB to go back to ActivityA. Although this…
Moises Martinez
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1 answer

BiometricManager to determine Face recognition result vs Fingerprint

I have started migrating to BiometricManager part of Android 29. We have a requirement to display a different icon for face or Fingerprint depending upon device support. Even the following code returns true on Pixel 4 though Face recognition is…
Bulu
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1 answer

How to handle the biometric prompt after lockout error?

i'm using the biometric prompt in order to authenticate clients on my app. The problem i'm getting is this: after i use a wrong fingerprint for 5 times, i get the ERR_LOCKOUT that locks the API for 30 seconds. After that, i get the lockout error for…
AndyShoes
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4 answers

BiometricPrompt Executor and/or callback was null

I'm using BiometricPrompt from androidx.biometric:biometric:1.0.0-beta02 for the authenticate process. But i face very strange problem. First time i call biometricsPromt.authenticate() everything works fine, the library shows me the screen depending…
Kostadin Georgiev
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KeyGenSpec.Builder.setUserAuthenticationRequired but not enforced

I am trying to encrypt something with a key generated in the TEE environment. The key has the following properties: I set the mUserAuthenticationRequired to true. However, when I do: cipher.init(Cipher.ENCRYPT_MODE, secretKey) …
Lena Bru
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1 answer

How to check biometric hardware is available using BiometricManager or BiometricPrompt?

I am implementing Biometric authentication using BiometricPrompt class. how to check is hardware is available or not before calling BiometricPrompt#authenticate method? how to check has enrolled biometric? How to call…
AvisSiva
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4 answers

Use facial recognition for android to authenticate multiple users

I am looking to create app to authenticate users using facial recognition. I checked Android provides Biometric prompt to authenticate the user but I am not sure if This API can be used for my use case. Also, if I can use this API, how many facial…
Kanika
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Throws user is not authenticated to access the Keys in KeyStore in Samsung S10

I am using Biometric API to access my Keystore. To access the keystore, I have enabled setUserAuthenticationRequired to true. When accessing the Keystore, I will call the biometric api and authenticate the user. But in samsung s10, Face ID…
Happy
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1 answer

Expo Local Authentication on Android skipping Face Authentication

I am trying to implement biometric authentication in a react native app using expo local authentication. Everything seems to works on iPhone and Android EXCEPT that expo's authenticateAsync function skips Face Authentication on Android. Among my…
szk
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