| 摘要 |
PROBLEM TO BE SOLVED: To provide a radio information storing device capable of detecting it, when it is dropped off from a commodity, etc. SOLUTION: When the radio information memorizing device 10 is adhered to an object, a bit Bt of a memory in an IC chip 13 is set to value '0'. If the radio information storing device 10 is dropped off from the object, a conductive adhesive layer 14 is left from respective lines 17, 18 and a potential of the line 18 is raised, the bit Bt of the memory is updated to value '1'. Accordingly, the value of the bit Bt of the memory indicates whether or not the radio information memorizing device 10 is dropped off from the object. Since the value of the bit Bt is read from the memory by a radio communication device in the IC chip 13 and is transmitted, it can be recognized whether or not the radio information memorizing device 10 is dropped off by receiving the value of the bit Bt. |
