To provide the portable terminal device, etc., which can speedily confirm information of a user without requiring any complicated operation.
Whether or not it is in an inquiry period is judged (step S1) and when so, whether or not it is in an authentication period is judged (step S2). When it is not in the authentication period, an advance to a step S7 is made without performing the processes of steps S3 to S6. When, however, it is in a period wherein authentication is needed an authentication validity period after last authentication, a connection with the server at an inquiry destination is made (step S7) after the authenticating process in the steps S3 to S6, and then data are received (step S8) and stored (step S10). In a step S13, the state of an authentication flag is discriminated when the authentication flag is set and it is right after authenticating operation, the stored data are displayed at a display part (step S15).
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