Looks like he is solving the problem with projectors and motion sensing: http://www.triplepointrobotics.com/blog/ http://www.triplepointrobotics.com/blog/ (from

Looks like he is solving the problem with projectors and motion sensing: http://www.triplepointrobotics.com/blog/ http://www.triplepointrobotics.com/blog/ (from his HN profile)