| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for inexpensively and easily invalidating an IC tag. <P>SOLUTION: A metallic foil 21 is adhered to an IC tag 1 where a secondary antenna 5 which transmits/receives a radio wave and a strap 11 are formed on a base film 3 through a metallic foil seal 17 to form an IC tag 2. The strap 11 includes a loop antenna 7 formed adjacent to the secondary antenna 5 on a strap base material 13 and an IC chip 9 connected to the loop antenna 7. The metallic foil 21 prevents an induced voltage from being generated in the loop antenna 7 by the secondary antenna 5. Thus, no power is supplied to the IC chip 9, and any information in the IC can be prevented from being read or written by radio communication. <P>COPYRIGHT: (C)2009,JPO&INPIT |
