A feature I'd like to see with Face ID would be to have the phone automatically lock (if it's on and unlocked) when it detects an unrecognized face. Would be nice in a public place in case someone tries to swipe your phone while unlocked. This would also ease the people paranoid that someone will pickup their phone and just point it at you and they're in. With this feature if they unlock it with your face, it automatically locks when the thief tries to actually use the phone. A setting for a timeout and to turn the feature off because I know many people hand their phone over to friends and family to show them videos/pictures/ect. Don't really know if this will ever reach Apple but maybe if this idea gains some popularity they'll look into it What do you think?