Gesture controls are tricky, only a few applications of them make sense (like hand-to-fist for camera). Something like this would be the modern version of butt

Gesture controls are tricky, only a few applications of them make sense (like hand-to-fist for camera). Something like this would be the modern version of butt dialing 911, back when users would speed dial 911 unintentionally from sitting on their phone.