http://gizmodo.com/gadgets/touch-me/...day-278613.php

Ignore the table crap at the moment and just read the article.

MPX or Multi-Pointer X is a modification of the X Windows Server that allows multiple input devices to be used at the same time. You only need a normal computer plus any number of keyboards and mice attached to use it. The system lets multiple users interact with one or various applications simultaneously.
Multiple inputs and the ability to use more than one program at once? Bye bye autohotkey.