A switching device that selectively changes a computer to be operated from multiple computers including a control unit that the control unit detects a cursor position on the computer to be operated based on coordinate data and a computer resolution of the computer to be operated, the coordinate data being generated by performing a same acceleration process as the computer to be operated, on relative coordinate data that has been acquired from a given pointing device, and the control unit selectively changing changes the computer to be operated according to the cursor position. It is thus possible to selectively change the computer to be operated without any dedicated software or requiring a given space for manipulation.