| 摘要 |
PURPOSE:To prevent the illegal usage of a slave device or a portable telephone. CONSTITUTION:The sub ID code or ID code of a lost or stolen slave device 24 or portable telephone is registered in a master device 19 or a public station 29. When a transmission from the registered slave device 24 or portable telephone is received the transmission from the lost slave device 24(or portable telephone) is inhibited, or the transmission from the lost slave device 24(or portable telephone) is inhibited, inhibition display is operated, and inhibition buzzer is rung, or the transmission from the lost slave device 24(or portable telephone) is inhibited, inhibition display is operated, and usage inhibition message or return message is issued. Thus, an alarm sound or an alarm message can be issued to the illegal user, so that a charge request due to the illegal usage can be prevented. And also, the illegal user can be informed of the returning method of the lost slave device 24 or portable telephone by demonstrating clearly the returning method by the alarm message, so that a returning rate can be improved. |
