| 摘要 |
PROBLEM TO BE SOLVED: To provide an information device and an entrance/exit management device capable of easily restoring information in the event of an action estimated as tamper action by maintenance, and realizing high security in the event of an intentional tamper action by erasing important information. SOLUTION: This device comprises an abnormality detection part 12 for detecting an abnormality, an abnormality signal generation part for generating an abnormality signal when the detection part 12 detects the abnormality, a restoration part 13 for generating a stop signal by an external operation, a storage part 10 for storing first information and second information to be secreted, and a control part 15 for making the storage part 10 erase the first information, when the abnormality signal is generated, and further making the storage part 10 erase the second information, when the the restoration part 13 is not operated within a predetermined time from the generation of the abnormality signal. COPYRIGHT: (C)2005,JPO&NCIPI |
