| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a portable storage device executing leakage prevention control processing such as erasure of stored information according to a state thereof when satisfying a prescribed condition. <P>SOLUTION: This portable storage device having a detection device has: a detection part for detecting attachment/detachment state between the portable storage device and a computer terminal; a state decision part for deciding a state of the portable storage device by use of at least information of a detection frequency of vibration generated to the portable storage device in a prescribed time detected by the detection device after detecting pulling out of the portable storage device from the computer terminal in the detection part, and deciding whether the state is a state that previously set leakage prevention control of information stored in the portable storage device is performed or not; and a leakage prevention control processing part executing leakage prevention control processing to a part or all of the stored information when deciding that it is the state that the leakage prevention control of the information stored in the portable storage device is performed in the state decision part. <P>COPYRIGHT: (C)2009,JPO&INPIT |
