[rrobukef]

Actually, there is a fingerprint in my phone. It isn't any of my fingers (I can't recall, maybe my elbow). Will I be in contempt of court for scanning my finger 'wrong'. I don't think my elbow will work a month later, it must have changed more than my finger.

[telchar]

I don't see why this is downvoted, parent brings up a good point. If a phone has a fingerprint or face lock, there is proof whose fingerprint or face (or whether it is a fingerprint or face) is the key. Is that knowledge not similar to a password? If the phone requires a PIN or passcode after say, 3 attempts, that's important information.