Electronic tags (Tag): composed of coupling elements and chips, each RFID tag has a unique electronic code, attached to the object to identify the target object, commonly known as electronic tag or smart tag rfid electronic tag: active tag, passive tag, semi Active semi-passive tags.
RFID working principle: After the tag enters the magnetic field, it receives the radio frequency signal from the reader, and uses the energy obtained by the induced current to send out the product information stored in the chip (Passive Tag, passive tag or passive tag), or actively send a certain Frequency