that looks serious, because it is. >> that's the kind of force you may experience in a serious car crash. so right here on this diagram you can see the impacts that players are taking. >> this is how professor dumer collects his detat with hits, he picks up the angle and acceleration of the head any time a player is hit. >> so the system is showing real-time impacts? >> basically within a couple of seconds of the impact it comes into the antenna and we can see live what happens to the