![]() ![]() However, there are two major categories of RFID systems – Active and Passive, and we are explaining each of their types and frequencies below. These RFID Key Fobs are categorized by the frequency band in which it operates. The RFID key fob also has two components: (1) a microchip that stores the data such as the unique ID and (2) An antenna which is usually a coiled wire to receive and transmit data. There are 2 parts: (1) the RFID key tag (commonly known as a key fob) and (2) the RFID reader. Radio-frequency identification (RFID) key fobs are a single part of an RFID system.
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