
New security certification means you'll soon be able to use your fingerprint or security hardware key to log in across apps and websites for all phones running Android Nougat and up.
FIDO2 is a relatively new security protocol being adopted across the application and website security industries which allows the linking of a device's hardware security – via fingerprint scanners or other hardware keys – with digital accounts to sign in easily.
Android has just become FIDO2 certified and so via a Google Services update (sorry Chinese devices) the login functionality will soon be rolling out globally to Android devices running Android 7.0 Nougat and up.
Source: Engadget