Seeing how the 4th gen air has Touch ID on the power button, could this come to the iPhone Pro as a new feature? Essentially it could mean having dual factor biometric authentication for those who really want the maximum security (or even triple layer with passcode+touch ID+face ID. It could also work as a substitute for Face ID when we have to be masked, or once we’re out of the woods with COVID, the Touch ID could even register a specific fingerprint as a “kill” switch where the phone automatically locks the screen and disables biometrics and requires a special password to unlock the phone that could even be separate from your normal passcode. I think it would be nice for the phone to have a silent alarm feature in an emergency where here could be a visually discreet indicator (such as a different Lock Screen wallpaper) to the user but unknown to anyone else.