However, minimum supported version of BiometricPrompt is Android P. Does it mean developers still have to implement FingerprintManager for users who have Android devices running versions below Android P? Step 1: Check device support. fingerprint sensors and 3D face authentication systems. It has only a Button on click of which will create the fingerprint Scanner dialog box. ... API 28 added the BiometricPrompt, ... Accessing them can only occur after the Android system confirms that the individual using the device is recognized and authorized. Encryption In my opinion encrypting data is at the heart of using biometric authentication in the first place. It comes with a standardized UI in form of a dialog and is backwards compatible down to API level 23 for fingerprint authentication and API level 21 for device credentials (PIN/pattern/password) Scenario 1: Fingerprint only. It brings standard experience for fingerprint authentication and potentially less bugs when you implement it from scratch. Android can be customized to support other forms of biometric authentication lik Iris. * `onAuthenticationSuccess` -> Biometric verified - transaction finished - modal is closed - returned to app. Below is the code for the activity_main.xml file. Even though the stock Android version of BiometricPrompt currently only implements fingerprint authentication, Samsung appears to have extended it to support Face Unlock as well. All biometric authentication or identification implementations must meet security requirements and have a strong rating in order to participate in the BiometricPrompt class . Starting with Android P (API level 28), you can use a system-provided authentication prompt to request biometric authentication based on device's supported biometric (fingerprint, iris, face, etc). So now that we have a working prompt we should look into it. left: BiometricPrompt on Android 7 Nougat / right: BiometricPrompt on Android 9 Pie. Previously, when discrete fingerprint sensors were the only forms of authentication in Android, developers could call FingerprintManager and provide their own custom UI that would work across all devices (since the fingerprint sensor was a common hardware experience). Prior to Android 8, fingerpint only authentication is available. The answer is no. BiometricPrompt only exposes biometric ... Let’s use the BiometricPrompt API to create an app that will allow the user to confirm their identity using a fingerprint. Conclusion: Android devs can now use the BiometricPrompt UI provided by the framework (not to be designed by the developer) to ensure consistency and uniformity across all the Android applications, unlike the Fingerprint Manager.. Also, BiometricPrompt supports not only fingerprints but also Face and Iris authentication, providing the much-needed flexibility to users to … The Android framework covers face and fingerprint biometric authentication. Go to the activity_main.xml file and refer to the following code. The BiometricPrompt deprecates the old FingerprintManager and supports all biometrics, including fingerprint, face and iris scan. On _all_ `BiometricPrompt` implementations now, Android expect the apps to hand-off to the OEM OS to handle fingerprint prompts with the 3 exposed authentication callbacks. Step 3: Working with the activity_main.xml file. A bit of Android fingerprint authentication history.