Fingerprint vs Face shines while (for instance) having a conversation and, because you have manners, want to maintain eye contact while pulling up a photo of th

Fingerprint vs Face shines while (for instance) having a conversation and, because you have manners, want to maintain eye contact while pulling up a photo of that thing you are describing, or to make sure that's just a robocall and not your wife with an emergency. It also shines first thing in the morning where your hair and eyes are so disheveled that even Siri didn't recognize you. Your thumb is probably still the same shape.