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Questions tagged [android-biometric]

128 questions
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Android camera permissions reduce availability on Playstore

I have an flutter app in playstore but rigth now i'm trying to update with new features, but some camera permissions/features are reducing the app availability The current devices admited are 17.706 and with my new update are just 12.672, and the…
Jonathan Ixcayau
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PackageManager.FEATURE_FINGERPRINT always returns false on API 23

I am using Fingerprint authentication in my app. To decide whether a device has a fingerprint hardware or not I am using this getPackageManager().hasSystemFeature(PackageManager.FEATURE_FINGERPRINT); in the official document it is mentioned that it…
Rohit Singh
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Issues capacitor-native-biometric cannot retreive credentials

Anyone used epicshaggy / capacitor-native-biometric plugin and have been able to make it work. I have just been able to trigger the NativeBiometric.verifyIdentity( function and make it recognize my biometrics, but that's about it. I've crawled the…
mahen23
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I use Biometric api but only show finger Authentication no Face Authentication in android 10

I use vivo with android 10 and my code is very simple just one button and click it to authenticate override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_face_id) …
GHH
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Restrict User for only Fingerprint Authentication

Hy, I am a newbie currently learning Mobile development. I am developing an application in which when the user presses the login button it will only give the option of Fingerprint authentication. but in my case, It gives options to the user to…
Saad Mehmood
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How to cancel FingerprintManager.AuthenticationCallback after authenticating?

When I get this error code FINGERPRINT_ERROR_LOCKOUT I must wait 30 seconds to retry again but after 30 seconds when trying to put my finger again nothing will happen why? And can I cancel FingerprintManager.AuthenticationCallback after…
Taha Sami
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What are the possible causes of BIOMETRIC_ERROR_HW_UNAVAILABLE?

I found this definition from the code /** * The user can't authenticate because the hardware is unavailable. Try again later. */ public static final int BIOMETRIC_ERROR_HW_UNAVAILABLE = 1; Since there's already BIOMETRIC_ERROR_NO_HARDWARE for the…
Aung Thiha
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Can my app choose the biometric type a user uses to authenticate?

If the user has an Android device with both biometrics features, face and fingerprint, can my app choose which one to use? Along with my question: Can both features be active at the same time? Is there any way to know which one is activated?
Augusto Carmo
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Problems encrypting large strings with asymmetric user authorization protected keystore key

I am trying to implement biometric authentication for encryption and decryption of a JWToken. The token is received and encrypted after user authenticated at the server. The encryption of the token should be permitted without biometric user…
Macs
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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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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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Security of devices who implement Face Unlock on Android 10

I would like to understand how secure facial recognition on android 10 is. First of all, I haven't found much information about the new google system and how secure it is, and I also haven't found any information about what android devices can…
Chananel
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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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