What is NFC?

In 2003, Philips Semiconductor and Sony Corporation planned to develop a compatible wireless communication technology based on contactless card technology. Philips sent a team to Japan to study with sony engineers for three months, and then jointly released a wireless communication technology compatible with the current ISO14443 contactless card protocol, named NFC (Near Field Communication).

NFC is a short-distance non-contact communication method, which combines non-contact induction (RFID) and wireless connection technology, acts on the 13.56Mhz frequency band, and the transmission distance is about 10CM. The transmission speed of NFC is currently 106Kbit/s, 212Kbit/s or 424Kbit/s, and it can be increased to about 1Mb in the future.

It is not only compliant with ISO18092, ISO21481, ECMA (340, 352 and 356) and ETSI TS 102 190 standards, but also compatible with widely used contactless smart card infrastructure using ISO14443A, B standards. Such as Philips' MIFARE technology and Sony's Felica technology.

Compared with other short-range wireless communication technologies, NFC is more secure and has a shorter response time, so it is very suitable as an electronic wallet technology in a wireless transmission environment, with fast and secure transactions.

Since NFC is compatible with existing contactless smart card technology, it has been supported by more and more manufacturers and has become an official standard.

In addition to payment functions, NFC technology can also provide easy, secure, fast and automatic communication between various devices. For example, NFC can help people exchange information between different devices, such as music, messages, photos, video clips, etc., and can also purchase new information content.

What are the application scenarios of NFC？

Application of NFC technology on mobile phones

NFC devices are currently used by many mobile phone manufacturers. At present, the application of NFC technology on mobile phones mainly includes the following five categories.

(1) For Touch and Go, such as access control management, tickets and tickets, the user can place the device storing the ticket or gate control password close to the card reader, and it can also be used for logistics management.

(2) Contact payment (Touch and Pay), such as contactless mobile payment, the user can make payment by placing the device close to the POS machine embedded with the NFC module and confirm the transaction.

(3) Touch and Connect, such as connecting two NFC devices (such as a mobile phone and a laptop as shown in Figure 1), for peer-to-peer data transmission, such as downloading music, transferring pictures to each other and Exchange contacts, etc.

(4) Touch and Explore, users can connect the NFC mobile phone to a smart public phone or poster with NFC function on the street to browse traffic information, etc.

(5) Load and Touch, the user can receive or download information through the GPRS network for payment or access control and other functions. As mentioned above, the user can send a text message in a specific format to the mobile phone of the housekeeper to control the housekeeper entering and leaving the house permission.