Patent ID: 8583095

Claim:
A mobile terminal device comprising: a display section; a display controller which controls the display section; a storage section which stores at least second information based on a name or title indicating an originator in association with first information comprising a telephone number or mail address; and a detector which detects whether a predetermined trigger action is made to the mobile terminal device, wherein, if an incoming call or mail arrives at the mobile terminal device, the display controller causes the display section to display the first information that comprises a telephone number or mail address corresponding to the incoming call or mail, but not display the second information associated with the corresponding first information, and, if the detector subsequently detects the trigger action, causes the display section to display the second information that is based on a name or title indicating the originator of the incoming call or mail, the detector detects whether the trigger action is made based on matching between authentication information that prescribes the predetermined trigger action and information taken in the mobile terminal device when the arrival is notified, the detector comprises a manipulation detector which detects a predetermined manipulation to the mobile terminal device; the detector sets the authentication information based on a result detected at the manipulation detector, and detects whether the trigger action is made based on matching between a result detected at the manipulation detector when the arrival is notified and the authentication information, the manipulation detector comprises an acceleration sensor; and the detector sets the authentication information based on acceleration information when the mobile terminal device is moved in a predetermined pattern, and detects whether the trigger action is made based on matching between information detected at the acceleration sensor when the arrival is notified and the authentication information.