Radiofrequency identification, or radio frequency identification (RFID), is a type of automatic identification technology. It uses wireless radio frequency to perform non-contact two-way data communication and uses radiofrequency to read recording media (electronic tags or radiofrequency cards). Writing, so as to achieve the purpose of identification and data exchange, it is considered to be one of the most promising information technologies in the 21st century.
Radiofrequency identification technology uses radio wave non-contact fast information exchange and storage technology, and combines data access technology through wireless communication, and then connects to the database system to achieve non-contact two-way communication, thereby achieving the purpose of identification for data exchange.