Patent ID: 8800026

Claim:
An information terminal device including a display and a touch panel, comprising: a pattern storage memory configured to store a release pattern that is to be entered into the touch panel to remove a restriction on a use of the information terminal device, the release pattern being designated by a user as a graphic pattern; a comparison circuit configured to determine whether an entered pattern entered into the touch panel matches the release pattern; and a controller configured to remove the restriction on the use of the information terminal device if the comparison circuit determines that the entered pattern matches the release pattern, wherein: the pattern storage memory stores an input request pattern suggesting that the release pattern be entered, the input request pattern is displayed on the display when the restriction on the use of the information terminal device is to be removed, the input request pattern includes a set of input suggestion regions suggesting that the release pattern be entered, the release pattern is based on one or more input suggestion regions selected from the set of input suggestion regions, a board for a board game is displayed as the input request pattern, the release pattern is a movement of one of figures used for the board game, and further comprising a pattern generating circuit configured to generate the release pattern based on a pattern entered by the user into the touch panel and to store it into the pattern storage memory.