Patent ID: 8199915

Claim:
A wireless system which activates terminals from a remote area by broadcasting activation information from a radio base station, the terminals respectively comprising: a power supply with a power switch activated when the terminal receives, by using a fixed key security system, activation information including same address information indicating a same address as an address of the terminal from the radio base station a predetermined number of times while a status of the power supply is power-off; a monitor device monitoring the status of the power supply of the terminal; and a security switch device switching the security system of the terminal from a dynamic key security system to the fixed key security system when the status of the power supply is changed to power-off and switching the security system of the terminal from the fixed key security system to the dynamic key security system when the status of the power supply is changed to power-on as the activation information including the same address information indicating the same address as the address of the terminal is received, by using the fixed key security system, from the radio base station the predetermined number of times.