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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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Crash when using Biometric API on some devices

We use androidx.biometric:biometric:1.0.1 in our application, and on some devices we get an error Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setVisibility(int)' on a null object…
Rasul
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Android: CryptoObject and BiometricPrompt security. Is it possible to hack?

I need to securely store certain secret in my app using biometry. I wanted to use BiometricPrompt to obtain CryptoObject which will be used to cipher and decipher this secret (e.g. like described here:…
BBNN
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Xamarin.Android (BiometricPrompt): setAllowedAuthenticators() method missing

I've implemented BiometricPrompt for biometric login using the Nuget package published by Microsoft successfully. I want my app to only allow strong (Class 3) biometric hardware. The native documentation states I should call…
Jay Sidri
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How do I add a biometric prompt before a user accesses my app settings?

I am using android's provided androidx settings library and I am having trouble adding biometrics to one of my settings. I am also using the androidx biometric library. The way android handles the results of biometrics is through call backs. This is…
Smail Barkouch
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Why does android BiometricPrompt authentication bound encryption throws IllegalBlockSizeException

I am quite unsuccessfully trying to implement BiometricPrompt with authentication bound decryption key(without allowing pin/password/pattern alternatives). I am using asymmetric keys since I need to encrypt a string without user authentication and…
Macs
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How can i implement face authentication using biometric prompt in android x?

But can i implement face authentication using biometric prompt or any other android api's in my app. If no, are there any sdk which I can use to implement this feature in my app??
Abishek B
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Can you use the biometric manager and biometric prompt to do facial recognition?

I am currently using the biometric manager and biometric prompt to create a fingerprint authentication app on a google pixel 2. The code below is for that app. However, i was wondering if i changed to developing on a google pixel 4 instead could i…
Jack1999
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About the BiometricPrompt.authenticate()

In the Android Developer reference I found this quote: This call warms up the biometric hardware, displays a system-provided dialog, and starts scanning for a biometric. This calls verify if the user have or not the fingerprint on smarthphone?…
Gabriel Júnior de Souza
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Biometric dialog issue on the devices with fingerprint scanner on screen

I use 'androidx.biometric:biometric:1.0.1' to show biometric prompt on the device before using it, that is explain why user can user fingerprint in application and button to deny it mBiometricManager = new…
Foenix
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close prompt after three failure attempts in androidx biometric prompt?

I am using androidX biometric prompt in my application. In that I am having three queries, Is there any option to close the prompt, after counting three failure attempts. Is there any option to display the password screen, without clicking use…
Naveen Kumar
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How to get name of fingerprint Android device?

I work with biometric fingerprint Android. When we register a fingerprint at settings, we also store the name of a fingerprint. My question is, is it possible we get the name of the fingerprint? I have code just authentication fingerprint, but I…
Abed Putra
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AndroidBiometricPrompt onAuthenticationError returns wrong error

I implemented the new androidx.biometric:biometric:1.0.1 as described here and using setDeviceCredentialAllowed(true). On API 29 it works correctly, on API < 29 when there aren't any device credentials set I would expect to get…
David
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Getting proguard error on adding androidx biometric API ( "androidx.biometric:biometric:1.0.1")

I am getting following error on building release apk after adding androidx biometric api "androidx.biometric:biometric:1.0.1" in gradle file Caused by: com.android.builder.internal.aapt.v2.Aapt2Exception: Android resource linking…
user3625750
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Which android bio-metric API we can use to implement Face unlock feature while accessing sensitive data

I want to implement Face unlock feature while accessing sensitive data of applications. So is there any build it Api like fingerprint
Sachin salunkhe
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Android BiometricAuthenticator.AuthenticationResult mUserId and multiple users

On Android, I would like to biometrically distinguish which user is using my app. I am not looking to have direct access to their raw fingerprint data, or face recognition. I am just assuming that more than one user might be using the phone. Is…
eshalev
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