Some stupid ideas for Face ID in further iOS releases. 
- unlock only with a special gesture (lift left eyebrow, smile, open mouth a bit, closed mouth...). If someone grabs your phone he is unable to unlock your phone when he holds your phone in front of your face, because obly you is knowing the unlock gesture
- face interaction: close both eyes for a second jumps to homescreen, close one eye go to app switcher, lift left eye brown „copy“, lift right eye brown „cut“, show the tounge for „undo“
- move head from right to left for „thumbs down“ in an app or decline an incoming call, nick for „thumbs up“ in an app or accept an incoming call
- look upwards, scroll upwards in safari, look downwards, scroll downwards
To prevent unwanted recognized gestures rest a finger on the side button.
- unlock only with a special gesture (lift left eyebrow, smile, open mouth a bit, closed mouth...). If someone grabs your phone he is unable to unlock your phone when he holds your phone in front of your face, because obly you is knowing the unlock gesture
- face interaction: close both eyes for a second jumps to homescreen, close one eye go to app switcher, lift left eye brown „copy“, lift right eye brown „cut“, show the tounge for „undo“
- move head from right to left for „thumbs down“ in an app or decline an incoming call, nick for „thumbs up“ in an app or accept an incoming call
- look upwards, scroll upwards in safari, look downwards, scroll downwards
To prevent unwanted recognized gestures rest a finger on the side button.
