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.