Yeah. I think it's a Vicon motion capture system. http://www.vicon.com/ http://www.vicon.com/ They're wildly expensive, but can give you sub-millimeter accura

Yeah. I think it's a Vicon motion capture system. http://www.vicon.com/ http://www.vicon.com/ They're wildly expensive, but can give you sub-millimeter accuracy at like 100 Hz.