COMMUNICATION SYSTEM, COMMUNICATION TERMINAL, WIRELESS KEY APPARATUS AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To make a function limit of a communication terminal such as a mobile phone terminal excellently function with low power consumption by using wireless communication.

SOLUTION: A communication terminal apparatus and a wireless key apparatus are prepared and a system as a wireless communication system between both the apparatuses including: a first communication mode wherein data is transferred between both the apparatuses; and a second communication mode wherein wireless communication is carried out between both the apparatuses for a period smaller than that of the communication in the first communication mode in a state of wireless connection between both the apparatuses being adopted. The communication terminal apparatus is configured such that an ordinary mode is set when the communication terminal apparatus is set in the second communication mode with the wireless key apparatus, and a function limit mode for applying limiting prescribed functions to the communication terminal apparatus is set when the communication terminal apparatus cannot make wireless communication with the wireless key apparatus and the first communication mode is set. The wireless key apparatus is configured to activate a warning means when the communication mode with the communication terminal apparatus shifts from the second communication mode to the first communication mode.

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