PROBLEM TO BE SOLVED: To properly guide a user to a finally fixed meeting position from a stage when a final meeting position is about to be fixed, without constructing a large-scale system.;SOLUTION: In a terminal device 1B, positional information contribution processing means 14B contributes the latest scheduled boarding position to an SNS 2X, and contributes the current position of the terminal device 1B at predetermined intervals. It is preset to the SNS 2X such that a contribution from an account set to the terminal device 1B is followed using an account set to a terminal device 1U. Information reference means 16U of the terminal device 1U refers to the contribution log of the SNS 2X to acquire the scheduled boarding position and the current position of the terminal device 1B contributed from the terminal device 1B, and display information processing means 17U displays them on display means 18U.;COPYRIGHT: (C)2013,JPO&INPIT
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