| 摘要 |
A new passive radio frequency identification (RFID) system to authenticate, identify, and sum currency amounts is described. The inventive device includes (1) a paper-like passive RFID transponder which could be embedded in a currency or used as the currency itself, and which contains encrypted/non-encrypted electronic bits of data (serial number, currency amounts, etc.) to uniquely identify said currency, (2) a transceiver for wireless interrogation of the transponder, (3) a computer server and/or database management system that is used for currency authentication to a known currency information database. The passive RFID transponder is paper-like, robust, and could be printed as a currency, or embedded in a currency. The transceiver sends an electromagnetic signal, which is picked up by the passive transponder in the currency. The passive RFID transponder in said currency uses the energy of the electromagnetic signal via electromagnetic coupling (backscatter) to transmit its serial number, currency denomination, and other desired encrypted/non-encrypted information back to the transceiver.
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