Patent ID: 8253556

Claim:
A Mobile Communication Terminal (MCT), characterized in that the MCT is comprising a GPS Receiver Unit for receiving some signal data from a GPS satellite, a Position Determining Unit for determining a current position of the MCT based on the aforesaid signal data, a Positional Information Transmitter Unit for transmitting information on the position obtained by the aforesaid Position Determining Unit and other information, a Controller Unit for sending a positional information transmission request to the aforesaid Positional Information Transmitter Unit, a Timer Circuit Unit for turning on power of the MCT at predetermined time intervals after the power of the MCT is turned off, a Display Unit for displaying the current situation of the MCT, and a Manipulation Unit for offering the input interface of user's operation, and the MCT is having a function of automatically transmitting the information on the position information and other information of the MCT at a predetermined time interval T 2 while the power of the MCT is on, a function of automatically transmitting the information on the position information and other information of the MCT at the a predetermined time interval T 0 after the power of the MCT is turned off and afterwards at a predetermined time interval T 1 , and a secret mode function of maintaining off in the aforesaid Display Unit during transmitting the position information and other information of the MCT after the power of the MCT is turned off, wherein the aforesaid secret mode function is comprising a function of disabling display of an ongoing process of automatically transmitting the position information and other information of the MCT during the power of the MCT is on by user's operation, and a function of disabling a manipulation of automatically transmitting the position information and other information of the MCT during the power of the MCT is on by user's operation.