Information terminal device and method of personal authentication using the same

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 plurality of input suggestion regions suggesting that the release pattern be entered,
• the release pattern is based on at least one of the input suggestion regions and a region outside the 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.

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 plurality of input suggestion regions suggesting that the release pattern be entered,
• the released pattern is a pattern that only passes one or more of the 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.

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 an input suggestion region suggesting that the release pattern be entered,
• the release pattern is a pattern located outside the 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.