RFID stands for Radio Frequency Identification.Often called inductive electronic chip or proximity card, inductive card, contactless card, electronic label, electronic bar code, etc.

A complete RFID system is composed of Reader and Transponder. Its action principle is that the Reader sends an infinite wave energy of a specific frequency to The Transponder to drive the Transponder circuit to send out the internal ID Code.The Reader receives the ID Code.The special features of Transponder are battery free, contact-free and card-free, so it is not afraid of dirt. Moreover, the chip password is the only one in the world that cannot be copied, so it has high security and long life.

The application of RFID is very extensive, currently the typical application is animal chip, car chip alarm device, access control, parking control, production line automation, material management.There are two types of RFID tags: active tags and passive tags.