To configure biometric authentication, please complete:
1. Open 'Settings' from the main menu.
2. Make sure that the 'Require PIN to enter the application' radio button is turned on.
3. Check the box 'Use with the blocker' is on if you want to use the "Smart Lock" function by distance.
4. Enable the 'Activate fingerprint scanner'.
Register fingerprints in the phone's settings, if it was not done before.
Keep in mind, that biometric configuration is specific to your Android version, so be sure to search for your security settings first.