Patent ID: 8228199

Claim:
An RFID tag assembly arranged to be fixedly secured to the inner surface of a vehicle's windshield to enable said tag to be interrogated by an interrogating reader transmitter located outside of the vehicle, said tag assembly comprising an RFID transponder, an integrated disabling member arranged for selectively disabling and enabling said transponder and a releasably securable connector, said RFID transponder comprising an antenna, RFID circuitry, and a matching section, said RFID circuitry including an integrated circuit chip, said matching section matching the antenna impedance to the integrated circuit chip impedance, said transponder being located within a thin body arranged to be fixedly secured to the inner surface of the windshield of the vehicle, said disabling member comprising a thin member connected to said transponder body and arranged to be moved from an operative position with respect to said transponder body to an inoperative position with respect to said transponder body, and vice versa, said RFID transponder being located between the interrogating reader transmitter and said disabling member when said disabling member is in said operative position, said releasably securable connector being arranged to releasably secure said disabling member in said operative position when said disabling member is moved to said operative position, said disabling member comprising a conductive portion coupled to said antenna to disable said RFID circuitry when said disabling member is in said operative position, said disabling of said RFID circuitry being accomplished by at least one of the group consisting of altering the impedance of said antenna to shift its resonance frequency, reducing the electric field at said antenna, detuning said antenna, changing the characteristics of the matching section, and changing the electric field in the vicinity of the matching section, said releasably securable connector being releasable to enable said disabling member to be moved from said operative position to said inoperative position and releasably secured in said inoperative position, said RFID circuitry being arranged to be automatically enabled when said disabling member is in said inoperative position.