The present invention allows a mobile terminal which has transmitted a display application command to control a display and thereby lends the display application right to the mobile terminal when a display application command is included in a transmission command transmitted from the mobile terminal obtained via a wireless module by an apparatus such as POS terminal or the like which is provided with the wireless module for enabling transmission and reception of information via a radio link to and from the mobile terminal in order to display various information pieces on the display. Thereby, a user of the mobile terminal can display the desired information on the display of the apparatus such as POS terminal and a shop having installed such apparatus therein can enhance the customer gathering capability.