Abstract: The user of a mobile communication terminal uses a valuta management application 31 to manage value information, and sets a threshold value to a valuta display control unit 32. Thereafter, when the user performs deduction of “valuta”, the valuta display control unit 32 makes a decision as to whether or not the valuta balance is less than or equal to the threshold value. If this decision is affirmative, then a display device 13, along with performing a display to the effect that the valuta balance has become less than or equal to the threshold value, also performs a display urging the purchase of “valuta”, and the user performs additional purchase of “valuta” according to this display. Accordingly, it is possible for the user to confirm that the “valuta” which is stored is within a predetermined range, so that the convenience is enhanced.

Abstract: A user of a mobile communication terminal registers a title or test body that a lock request electronic mail should have for locking function of a contactless type communication device is a lock control information area 23R of the mobile communication terminal. After that, if a lock request electronic mail having the registered title is received, and the lock request electronic mail is detected by the lock request detection section 51, then when the contactless type communication device is in a usable state, in the mobile communication terminal the function lock section 52 within the control section locks the function of the contactless type communication device via the wired communication path.

Abstract: If a lock request for function of an IC card function section is executed from a locking terminal via a mobile communication network, a lock request detection section 51 detects the lock request. If the lock request is detected in this manner, the function lock section 52 locks the function of the IC card function section by sending a function lock instruction via a wired communication path to the IC card function section. The function lock notification section 53 then notifies the fact that the function has been locked to a locking notification mail communication unit pre-registered in the terminal registration table 23T via the mobile communication network. In this way, since function lock information of a contactless type communication device fitted in a mobile communication terminal is appropriately notified via a mobile communication network, convenience for the user is improved.