Patent ID: 7277017

Claim:
An RFID tag comprising: a base; a first conductive pattern provided on the base, which operates as a communication antenna; a second conductive pattern for peeling detection provided on the base, which is destroyed when peeled off the base; a circuit chip electrically connected to both the first conductive pattern and the second conductive pattern, which carries out a radio communication using the first conductive pattern as an antenna and detects the destruction of the second conductive pattern; and a cover covering the first conductive pattern, the second conductive pattern and the circuit chip, which is bonded to the base in a detachable manner and peeled off the base with the whole or part of the second conductive pattern remaining bonded, wherein the first conductive pattern includes two extending sections extending from the circuit chip, each end of which is connected to the circuit chip and a correction pattern for antenna characteristic correction which bypasses the circuit chip and connects the two extending sections, and the second conductive pattern is formed within an area enclosed by the two extending sections and the correction pattern.