Patent ID: 8758982

Claim:
A method of customizing a plurality of identification devices, each of the plurality of identification devices having a metal layer, a dielectric layer, and a semiconductor layer on a substrate, the method comprising: a) forming, on a first one of said plurality of identification devices, a first pattern in a material selected from the group consisting of said metal layer, said dielectric layer, and said semiconductor layer using laser patterning; b) forming a different pattern in a same material in which said first pattern is formed on a next one of said plurality of identification devices using laser patterning; c) repeating step (b) such that at least a majority of said plurality of identification devices contains a unique pattern in said same material in which said first pattern is formed, wherein said first pattern, said different pattern and said unique pattern encode a bit string or signal pattern; and d) attaching each of the plurality of identification devices to antennae, or forming antennae in the substrates, wherein each of the plurality of identification devices are configured to receive a first wireless signal, demodulate said first wireless signal, perform control and readout functions, modulate a second wireless signal and broadcast said second wireless signal.