Use biometrics

Windows Hello for Business enables users to use biometric gestures, such as face and fingerprints, as an alternative to the PIN gesture. However users must still configure a PIN to use in case of failures. If you enable or do not configure this policy setting, Windows Hello for Business allows the use biometric gestures. If you disable this policy setting, Windows Hello for Business prevents the use of biometric gestures. NOTE: Disabling this policy prevents the user of biometric gestures on the device for all account types.