That's actually an excellent adaptation of the concept. They've got those headsets already - use them.
What you need is those sensors that you get in library books....but in the ball. The ball goes through the goal, it sets off a sensor just like at the library...or K-mart if you will. How FIFA don't consider this a viable option I'm not sure.
Quote:That's the one I forgot. Only problem with red cards is perception. You'd have differing outcomes from the different referees.
You'll have the same problem with penalties or dives.