We are looking to open a golfing driving range whereby you hit the golf balls at targets and if they go in one of the holes, you are awarded a different number of points. This is already being done by a company with Radio Frequency chipped balls and is patented. I wonder if there are any other types of sensor that might work like laser/infrared??   Really appreciate everyones help! (also I was unsure if this is Physics or Engineering so I double posted, sorry!)