Thanks for suggestions! Pushing the crown invokes system UI. * gyroskope to look around: I did try some of it, but it also means that you have to tilt the watch on more axes which usually means you tend to have worse eye contact with the surface of the display. * scroll for walking: I did try, but it wasn't much satisfying to use (I mean even worse than the other controls here :-D) * tap anywhere to fire: good idea!