A new technology developed by PlayfulVision, an EPFL startup bought by Second Spectrum, records all aspects of sporting events for subsequent analysis in augmented reality. The system will be used in all NBA games in the U.S. starting in 2017. The multi-camera system captures and analyzes the athletes' every move. The aim is to see how players pull off a great pass, for example, and to assess whether or not certain shots should have been taken. The system is based on optical trackers that capture every move by every player and by the ball, recording their exact coordinates 25 times per second. This information will be used to carefully analyze games: body position, shots, rebounds, and fouls.