Patent ID: 8112101

Claim:
A communication system, comprising: a communication terminal; and a remote communication device communicating with the communication terminal, wherein: the communication device issues a position notification instruction to the communication terminal; and the communication terminal notifies the communication device of a current position of the communication terminal after suppressing representation with which the notifying can be recognized at the communication terminal in response to the position notification instruction, and wherein the communication terminal comprises a position detecting section which detects a current position of the communication terminal; a control section which notifies the communication device of the current position obtained from the position detecting section, in response to an instruction from the communication device; and a power source section comprising a first power supply section which continuously supplies power to the control section, and a second power supply section which supplies or stops supplying power to all sections of the communication terminal except at least the control section, wherein the second power supply section supplies power to the position detecting section in response to an instruction of the control section while stopping supply of power to other sections.