Radio frequency identification technology (RFID) is an emerging automatic identification technology developed in the 1980s. Radio frequency identification technology is a technology that uses radio frequency signals through spatial coupling (alternating magnetic or electromagnetic fields) to achieve contactless information transmission and pass through The information to achieve the purpose of identification technology.
RFID is a simple wireless system with only two basic components. The system is used to control, detect and track objects. The system consists of an interrogator (or reader) and many transponders (or tags).