You still have a separate password that authenticates you without biometrics.
The touch + passcode is nice because even if someone watches you enter your passcode it won't matter unless they can spoof the fingerprint reader too, which is highly unlikely. And you can use a much shorter passcode for convenience.
The touch + passcode is nice because even if someone watches you enter your passcode it won't matter unless they can spoof the fingerprint reader too, which is highly unlikely. And you can use a much shorter passcode for convenience.