Patent ID: 7735734

Claim:
A portable terminal unit having a mounted IC card including a first data area generated by a first application, a second data area generated by a second application, and a privacy function capable of concealing the existence of each data area individually, the portable terminal unit comprising: a setting unit including an individual lock mode to inhibit the use of only the first application, by instructing the IC card to set the privacy function to the first data area corresponding to the first application on detection of an operation inhibiting the use of the first application; and a controller inhibiting an access to the first data area in response to an access request from the first application to the first data area without transferring the access request to the IC card, and transferring the access request to the IC card in response to an access request from the second application to the second data area, thereby executing control to enable the access to the second data area, in a case where the privacy function is set to the first data area while the privacy function is not set to the second data area, and transferring an access request to the IC card and receiving, from the IC card, a response indicating that the first data area does not exist in response to the access request to the first data area from a third application which refers to the first data area.