Patent ID: 8893977

Claim:
A product identification device for use with an inductive reader comprising: a point of sale storage device for a product; a product identification circuit supported by the storage device and including a plurality of isolated resonant circuits electrically isolated from one another and each defining a resonant frequency, wherein each of the plurality of isolated resonant circuits includes an inductive element and a shielding element to at least partially encompass the inductive element, and wherein the product identification circuit includes a reflected impedance based on the resonant frequency of each of the plurality of isolated resonant circuits and based on the shielding element of each of the plurality of isolated resonant circuits, such that the product can be identified remotely at a point of sale based on the reflected impedance; and a secondary coil electrically coupled to an electrical load supported by the point of sale storage device, the secondary coil being configured to receive power from the inductive reader for transfer to the electrical load.