I have head of it before but dont know how I feel about a base station.
Thanks for the link!
Sixense Entertainment, based in Los Gatos, Calif., makes the technology called TrueMotion, which was first developed to track the head positioning of F-16 and F-18 jet pilots. It consists of a handset and a base station. The controller tracks movement along six different axes, and the base station generates a very weak magnetic field. The data is used to determine the exact position of the cursor on the screen.
Their site or so it seems
Dice
Cool Video I found
[youtube]H0Gk_sflEhI[/youtube]