| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an antitheft device which cannot be searched even by tracing a harness of an antenna. <P>SOLUTION: An identification module 21 reads identification information from an ID tag 13, and identifies an identification code in which a mechanical side stores. A processing module 31 is separated from the identification module 21. The processing module 31 makes radio communication with the identification module 21, and permits an operation of a machine only when the identification code is met. An external module 41 transmits a predetermined code to the processing module 31 by the radio communication so as to activate a system. The processing module 31 performs the communication with the identification module 21 in such a state that the machine is stopped at every fixed time, and informs the external module 41 of abnormality if the communication is not established. <P>COPYRIGHT: (C)2007,JPO&INPIT |
