A photographic pointer positioning (3) control device (200) used with the main unit of a game system or the like to control the positioning of a pointer on the display screen of the game system by means of photographing the display screen (10) with a video camera (230) and then processing the video signal thus obtained through an image out-line and verification processing process and then computing the processed data through a computing unit into coordinate values corresponding to the aiming point of the video camera at the display screen to replace the function of a mouse, tablet, or light-gun in a computer system (2120).
