CmdrTaco from the and-it-fits-in-the-palm-of-your-hand dept.
FTL writes "Turn an ordinary wheel mouse into a 3D pointing device. All one needs is some string, some hot melt glue, and a lot of math. 3D mice have been floatingaroundforawhile, what will it take to get people to use them?"
Time-sharing is the junk-mail part of the computer business.
-- H.R.J. Grosch (attributed)