I have a Smart Gun computer (RasPi Zero with a 2.5" screen) which will be mounted on the stock above the trigger on a Star Wars inspired display gun. The issue is how does the shooter engage with the computer? The screen is too small for fingers and using a pen means the possibility of losing the pen.
I think the answer might be to mount a thumb joystick.
Does anyone have any ideas for a better interface or see problems with my idea?