A two-dimensional code B of a face panel or the like photographed by the camera 6 is analyzed. An analysis result of the two-dimensional code B is compared with each of key words stored in a memory 5. When there is a key word that corresponds with the analysis result, a mask of the content corresponding to the coincident key word is removed to execute a process corresponding to the content. This makes it possible to show a user the content so that the content is added, and it is possible to show the content like a purchase privilege such as a face panel. For this reason, it can be expected that amusement thereof is improved, and a number of face panels become widely used.