Patent ID: 7397378

Claim:
A tag responsive to a transmitted signal, comprising: a dielectric substrate; an antenna supported on the substrate and defining an antenna pattern having a first electrical length selected to permit wireless interrogation by an external reader at one or more prescribed frequencies; at least a first electrical contact at a first location along the antenna; a conductive shunt conductively contacting the antenna at least at the first location and extending from the first location so as to define an antenna pattern having a second electrical length that is different than the first electrical length for so long as the conductive shunt remains in conductive contact with the antenna, the second electrical length precluding wireless interrogation by the external reader at the one or more prescribed frequencies; and a carrier affixed to the shunt with a connection which is stronger than the conductive contact of the shunt to the antenna, the carrier being selectively movable away from the substrate to separate the conductive contact of the shunt to the antenna and restore the first electrical length of the antenna pattern.