| 摘要 |
There is provided a terminal device or the like which can prevent a user from fall in trouble with an unknown third person when the user executes a network game or the like over a computer communication network. As terminal devices establish a connection in an ad-hoc mode, individual unique identification information thereof are exchanged and a communication for a game is carried out, the terminal devices saves the unique identification information of the communication counterparty. When the terminal devices establish a connection in an infrastructure mode, introduction requests each specifying the saved unique identification information are transmitted to a server device, the server device transmits introduction responses each informing an address of the terminal device to the terminal devices which have transmitted an introduction request specifying the unique identification information of the communication counterparty, and the terminal devices carry out a communication for the game.
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