| 摘要 |
PROBLEM TO BE SOLVED: To provide an information terminal communication system which easily performs grouping terminals as well as ensuring the security of a network. SOLUTION: The information terminal communication system stores data containing common authentication information in each information terminal, sends the data from the information terminal, gets the common authenticating information of the received data, compares the detected common authenticating data with the authenticating data stored in the information terminal, and based on the result decides whether data receiving is available or not.
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