NFC is an emerging wireless data transmission technology. Devices using NFC technology (such as mobile phones) can exchange data when they are close to each other. It evolved from the integration of contactless radio frequency identification (RFID) and interconnection technology. By integrating the functions of inductive card reader, inductive card and point-to-point communication on a single chip, mobile terminals are used to realize mobile payment, electronic ticketing, access control and mobile identification. An emerging wireless data transmission technology uses NFC technology devices (such as mobile phones) can exchange data when close to each other. It evolved from the integration of contactless radio frequency identification (RFID) and interconnection technology by integrating inductive card readers on a single chip. It has the functions of sensor, proximity card and point-to-point communication, and uses mobile terminals to realize mobile payment, electronic ticketing, access control, mobile identity recognition, anti-counterfeiting and other applications.