NFC is a short-range wireless communication technology, which can be used for near-field communication between mobile devices, consumer electronics products, PCs and intelligent control tools, and NFC functions can be used without the assistance of other accessories.

There are three different ways to use near field communication:

Full integration with mobile phones: Near field communication, especially on newer devices, can be fully integrated with mobile phones. This means that the near field communication controller (the component responsible for actual communication) and the security component (the security data area connected with the near field communication controller) are integrated into the mobile phone itself. An example of a fully integrated near field communication mobile phone is Google and Samsung jointly released GoogleNexusS.

Integration into SIM card: In addition, near field communication can also be integrated into SIM card-a card that can identify mobile phone users on the cellular network of operators.

Historical background:

Near field communication is a near field communication technology developed based on RFID technology. Like RFID, near-field communication information is transmitted through electromagnetic induction coupling in the radio frequency part of the spectrum, but there are still great differences between them.

The transmission range of near field communication is smaller than that of RFID, which can reach 0 ~1m. However, due to its unique signal attenuation technology, near-field communication has the characteristics of low cost, high bandwidth and low energy consumption compared with RFID.