Radio frequency identification devices (RFIDs) have been used widely in industrial and medical applications. Specifically, RFIDs have been applied in asset tracking and security systems by several companies extensively. RFID can store and retrieve data using RFID tags/transponders remotely. The conventional RFID system includes tags, reader, local software/infrastructure, and back-end system. RFID tag is the identification device in the system and contains at least a microchip attached to an antenna that sends data to the RFID reader. The antenna emits radio signals to activate the tag and to read and write to it. The signal strength depends upon the power output. When the RFID tag ...
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