RFID Key Fobs

Radio-frequency identification (RFID) key fobs are a single part of an RFID system. There are 2 parts: (1) the RFID key tag (commonly known as a key fob) and (2) the RFID reader. 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. These RFID Key Fobs are categorized by the frequency band in which it operates. Low, High or Ultra-high frequency. However, there are two major categories of RFID systems – Active and Passive, and we are explaining each of their types and frequencies below.