After trying Clippy out I really liked how @Nate was moving the mouse after a key press, and how he handled dragging and double-clicking. However, I found the accuracy of the 4C head tracking to be lacking, especially around the corners of the screen. I wanted to try it with the improved accuracy of the TrackIR so I added support for moving after a key press to Precision Gaze Mouse. @Cliff give this version a try for better accuracy http://precisiongazemouse.com/