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Questions tagged [android-fingerprint-api]

Questions regarding the use of the Fingerprint Authentication API, introduced in Android 6.0 Marshmallow (API level 23).

323 questions
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How many fingerprints can we store using Android 6.0 fingerprint api

I am building an application which needs to store fingerprints of multiple people. Can this be achieved using the fingerprint api.
user1615243
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What else can we do with Android M's Fingerprint API?

Since the release of Android 6.0 Marshmallow, Google added fingerprint support to Android. This API is called: Fingerprint Authentication, it can be found…
PythonPupil1906
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Initializing FingerpringManager.Crypto Object, getting Crypto primitive not backed by AndroidKeyStore provider?

I am using Android FingerPrintManager API and creating key pair using KeyPairGenerator, i want to encrypt a password with public key and then decrypt when user is authenticated by entring fingerPrint but as soon i run my project it gets crash and…
Tushar Purohit
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Android Fingerprint code is not working in a service class

I am following the Google sample code. The below code is working fine when I used in a Activity class. But when I use the same code in a service class is not working. Can't receiving a call back from FingerprintUiHelper.Callback on both method…
ALI RAZA
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Kivy - How to authenticate Kivy apps using fingerprint scanners

I am hoping to make use of fingerprint scanners within my Kivy app for authentication. Unfortunately, I haven't found any documentation regarding how to do this. I'm quite new to Kivy development, and I was hoping to achieve this by (e.g. for…
andyandy
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Android Fingerprint Login - Possible or not

I am developing one app in which user will be able to login with fingerprint. As far as I know the storage of fingerprint is local O.S dependent. If I want to achieve this through server end how can I make it work ? Ex. If a user enter a user…
pratz9999
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Android - How to show device unlock screen?

How to show lock screen with device lock options. Here I have enrolled Pattern and Finger for unlocking device. So that Google pay showing above screen on launch. How Do I show same device lock screen?
Rohan Patel
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How can I use biometrics login with Cognito on Android?

I need to develop an Android app that has MFA authentication. To log in, the user needs to first insert his username & password and then, biometric data (fingerprint, face, or iris) to confirm his identity. I want to use something like Cognito to…
Ansol
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Intent ACTION_FINGERPRINT_ENROLL on Redmi results in exception

On a Xiaomi Redmi Note 9 Pro we try to open the fingerprint enrollment with the following code: val intent = Intent(Settings.ACTION_FINGERPRINT_ENROLL) startActivityForResult(intent, SETTINGS_FINGERPRINT_ENROLLMENT_REQUESTCODE) This result in the…
Aaron
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How to Implement Custom Fingerprint UI Using BiometricPrompt

We can provide custom UI in FingerprintManager Api but that is deprecated in API level 28. Now android has provided BiometricPrompt API and it's is providing default fingerprint dialog. I have gone through many articles, blogs and tutorial but…
Ritesh Mathur
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java.security.InvalidKeyException: Keystore operation failed Incompatible padding mode

I am learning Android Development and tried to work on Fingerprint Authentication So I watch a video on Youtube about it and do the same thing shown in that video, First, there is try-catch block through which my app doesn't crash but I'm unable to…
Developer Jayu
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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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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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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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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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