Abstract

The identification technologies market is currently dominated by optical barcodes and traditional RFID. Although it combines the advantages of both of these technologies, chipless RFID has struggled to become a serious alternative. One of the major roadblocks is the limited quantity of information encoded by chipless RFID tags at this time. The current memory capacity does not exceed about 50 bits, but a minimum of 128 bits is necessary to hope to penetrate the mass market. The tag must also retain the dimensions of a credit card (8.5cm×5.4cm). This objective corresponds to a surface coding density of 2.8 bits/cm2.

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