| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for preventing data recorded in a missing mobile terminal from being read, falsified or deleted by other and to provide a mobile terminal data protection system. SOLUTION: When a possessor of a mobile terminal 24a submits a missing notification of the mobile terminal 24a to a position registration station 7, a missing notification recording section 9 of the position registration station 7 records the missing information. When the mobile terminal 24a is lost in a cell area to which no radio wave reaches, a finder of the mobile terminal 24a enters a wrong password, the key operation of the mobile terminal 24a is invalidated, and when a correct password is entered, key operations other than the password are invalidated. When the missing mobile terminal 24a enters an area of a second cell 14, data of the mobile terminal 24a are transferred to a database 8a of the position registration station 7 and recorded therein. At the same time, a command from the position registration station 7 deletes the data of the mobile terminal 24a. Thus, the data of the mobile terminal 24a and the security of the data can be ensured.
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