Sorry to bring this one back from the grave. I've added a new video of the system at
http://www.youtube.com/watch?v=wgs0DJxPn9o. (Some of the slight inaccuracies are my fault due to a poor calibration attempt)
I recently had the chance to demo the system at the 2010 Dynamic Systems and Control Conference in Boston, which was attended by all sorts of industry professionals. That was exciting
. I hope to get a version working with handguns soon, which I think could be an excellent way to safely train holster draws, acquisition of moving targets, etc.