I have joint+nerve issues and struggle using a computer -- but a mouse in particular -- for extended periods. Something like this would be game-changing for me;

I have joint+nerve issues and struggle using a computer -- but a mouse in particular -- for extended periods. Something like this would be game-changing for me; it would be awesome to have another input with "resolution"/accuracy anywhere close to what the mouse can do. Eye tracking isn't quite it for me, trackballs are very uncomfortable (thumbs are one of the biggest joint issues for me), ergonomic mice that meet my needs are hard to find with left-handed design, keyboard as mouse input works terribly, ... so a device like this would be wonderful.