RE: https://infosec.exchange/@Laukidh/116026768953675644

Handy info to iPhone users:

When you go through an airport or meet the police, press the power button and either volume button for three seconds. This puts your phone in a state where it can only be unlocked with your passcode.

So if anyone ever tells you to hand over your phone, you can do this immediately and prevent them from unlocking it with your face.