[adciv]

This is sounding interesting. I think we'll need to write a linux app to read what the mouse is doing, but I think this is possible. The only two issues I know are the max distance from the surface (as noted) and the maximum tracking speed of the mouse (which you seem to have taken care of).

How far above a surface can you hold the mouse and still have it track? I've seen different ones with different distances over the years.