Patent ID: 7454194

Claim:
A mobile terminal system having a personal authentication function and a communication function for bi-directionally communicating with a communication base station, comprising: a personal authentication information storing section for storing personal authentication information; an identity information inputting section for inputting identity information of a current user of the mobile terminal for identification of an authentic user of the mobile terminal; a personal authentication section which checks authenticity of the identity information inputted from the identity information inputting section on the basis of the personal authentication information stored in the personal authentication information storing section for personal authentication; an informing section which transmits an authentication result to the communication base station if the personal authentication is failed as the result of the check of the authenticity of the identity information by the personal authentication section; and a communication base station which bi-directionally communicates with the mobile terminal, wherein the communication base station comprises: an owner information storing section which stores owner information including a name and a wire phone number of an owner of the mobile terminal; and an owner-addressed authentication result informing section which, upon reception of a personal authentication failure result from the mobile terminal, transmits the personal authentication failure result to the owner with reference to the owner information stored in the owner information storing section.