The difference between NFC and RFID

First, NFC integrates a contactless card reader, contactless card and point-to-point functions into a single chip, while rfid must consist of a reader and a tag. RFID can only realize the reading and judgment of information, while NFC technology emphasizes information interaction. In layman's terms, NFC is an evolved version of RFID, and both parties can exchange information at close range. The NFC mobile phone has a built-in NFC chip, which forms part of the RFID module and can be used as an RFID passive tag for payment; it can also be used as an RFID reader for data exchange and collection, and can also be used for data communication between NFC mobile phones. .

Second, the transmission range of NFC is smaller than that of RFID. The transmission range of RFID can reach several meters or even tens of meters. However, because NFC adopts a unique signal attenuation technology, compared with RFID, NFC has the advantages of short distance, high bandwidth and low energy consumption. Features.

Third, the application direction is different. NFC is more aimed at communicating with consumer electronic devices, while active RFID is better at long-distance identification.

Therefore, the conflict between the so-called RFID standard and the NFC standard is a misunderstanding of NFC. NFC and RFID have similarities at the physical layer, but they are two technologies in themselves and RFID. RFID is only a technology for identifying tags wirelessly, while NFC is a wireless communication method. This communication method is interactive.