what is an rfid

RFID stands for Radio-frequency identification. It is a wireless communication technology that uses electromagnetic fields to automatically identify and track tags attached to objects. An RFID system consists of three components: a scanning antenna, a transceiver, and a transponder. The scanning antenna and transceiver are combined to form an RFID reader or interrogator. The transponder, also known as an RFID tag, consists of a microchip, an antenna, and a substrate. The tag information is stored in a non-volatile memory. RFID technology has been commercially available since the 1970s and is used in various applications, such as asset tracking, inventory systems, and border management. RFID has several advantages over systems that use barcode asset tracking software, such as the ability to read data outside the line-of-sight. RFID technology is also used in credit and debit cards, which enable users to pay for items by simply tapping the card against a card reader. However, RFID technology can also make it easier for others to steal personal information, which is why RFID wallets are becoming increasingly popular.