| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve security of information stored in wireless tag circuit elements. <P>SOLUTION: A scanner unit 200 of an activation control device 100 comprises: an antenna 4 for transmitting and receiving information through wireless communication to and from a plurality of specific wireless tag circuit elements To having IC circuit sections 150 and antennas 151; and a controlling circuit 202. A central control unit 104 and the control circuit 202 of the activation control device 100 access via the antenna 4 the first wireless tag circuit element To, and the second wireless tag circuit element To different from this, respectively, reads information encrypted with a predetermined encryption key from the first wireless circuit element To, and the predetermined encryption key from the second wireless tag circuit element To, and acquires the decrypted information by decrypting the encrypted information. <P>COPYRIGHT: (C)2007,JPO&INPIT |
