Funny, I've been using a mouse since the eighties. Not at all minimizing your RSSI issues. I've often thought that the reason I don't have RSSI and shoulder is

Funny, I've been using a mouse since the eighties. Not at all minimizing your RSSI issues. I've often thought that the reason I don't have RSSI and shoulder issues (which one can get using a mouse) is that I amp the acceleration (or whatever the term is) up all the way. I use a small mouse (currently a wireless logitech, thanks Doug) and I can move my pointer quickly and precisely across the entire screen while keeping the outside pad of my lower hand (near the wrist) resting on the desk (or couch at the moment). I move the mouse entirely with my fingers, no wrist or shoulder movement at all. If you watched my hand moving the mouse, and took the mouse out from under it, it would like like I was gently scratching the desk/couch. The downside is that when someone else walks up to my machine to show me something they get vertigo when they first move the mouse.