I watched this you tube video which I found on the Nine Inch Nails site. It's is from the guy that developed the interface control system for NIN's stage. He explains how it works and how he worked with Trent Reznor and team to implement. While not the greatest video quality still impressive as a behind the scenes look at a cool technology which enabled an artist to better realize his vision. In this case the interactivity of lights and electrical devices with performers motion and contact.
