| 摘要 |
A mobile terminal 100 includes a position information detection part 8 that detects current position information, a position information decoder part 9 that calculates the current position information as latitude/longitude information, and a position accuracy degradation-producing part 10 that degrades the apparent accuracy of the latitude/longitude information in plural levels. In operation, when a position search request is made from a third-person terminal, the mobile terminal 100 transmits position information with an accuracy according to the authentication result (such as the result of password verification) of the third-person terminal concerned. Therefore, even when the password has been stolen, position information with an accuracy intentionally degraded by the user of the mobile terminal can be transmitted, thereby preventing an inversion of privacy or stalking. |
