A digitizing tablet is provided, comprising: a display surface with a digitizer which detects a location of a front tip of a digitizing stylus, a pen sensor configured to detect the digitizing stylus being placed flatly on the display surface and, in response, to transmit a detecting signal, and a controller electrically coupled to the pen sensor. The controller is configured to execute instructions for: receiving the detecting signal from the pen sensor; and placing the digitizing tablet into a suspend mode upon receipt of the detecting signal.