| 摘要 |
PROBLEM TO BE SOLVED: To provide a miniaturized data communication device capable of being shared by a plurality of users while keeping secret property, and effectively using a storage area without being occupied by the communication information of a specified user among the users. SOLUTION: An internal memory 3 has a plurality of user areas 7 of predetermined storage size, and a corresponding registration password is registered to each user area 7. A storage control part 5 stores communication information received by a communication part 2 in the user area 7 corresponding to the identification information possessed by this communication information. An authentication part 5 authenticates an inputted password, and an output part 6 outputs the communication information in the user area 7 corresponding to a registered password matched to the authenticated password. COPYRIGHT: (C)2004,JPO
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