I created a high box made out of cardboard, at the bottom is a web camera or a video camera. There has to be an infrared filter on the camera so it can read the black dots, which the user has created by touching the surface. At the top of the cardboard box, is a polycarbonate sheet that has to be very smooth on all sites. There has to be a infrared LED circuit all around the sheet and when you push (walk on) the polycarbonate sheet, the LED´s light up and give the camera a signal where it has been touched. The LED´s have to be linked together with wire and then plugged to a power supply.
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