This years football season is set to begin in September, and for the first time 17 National Football League stadiums will employ radio-frequency identification (RFID) technology to better track how players move on the field during games. The league has partnered with Zebra Technologies to use its quarter-sized RFID sensors inside the shoulder pads of players. The NFL also plans to hand the data over to teams so that they can analyze it, but not initially. USA Today notes that the league plans to do some testing on the data its gathered before making it available to teams, and that all NFL players agreed to wear sensors as part of their collective-bargaining agreement in 2011.