GoalRef Goal-Line Technology

ERLANGEN, GERMANY - JULY 10: The GoalRef Technology system is tested at Fraunhofer IIS Research Institute on July 10, 2012 in Erlangen, Germany. A magnetic field is installed in the goal mouth which detects when an iBall (an intelligent ball) cross the goal-line before sneding a signal to a watch worn by the referee to confirm whether or not the ball crossed the line. This is one technique that FIFA are considering for use during major football tournaments. (Photo by EyesWideOpen/Getty Images)