NFC chips have the functions of mutual communication and computing power. The Felica standard also includes encryption logic circuit, and the later standard of MIFARE also adds an encryption/decryption module (SAM).
The NFC standard is compatible with Sony's FeliCaTM standard and ISO 14443 A, B, that is, Philips' MIFARE standard is used. TypeA, TypeB and TypeF are abbreviated in the industry, where A and B are Mifare standards and F is Felica standards.
In order to promote the development and popularization of NFC, the industry has created a non-profit standard organization NFC Forum to promote the implementation and standardization of NFC technology and ensure the cooperation between devices and services. At present, NFC Forum has hundreds of members around the world, including Sony, Phlips, LG, Motorola, NXP, NEC, Samsung, atoam and Intel, among which China members include China Mobile, Huawei, ZTE, Shanghai Tanya and Zheng Long, Taiwan Province Province. NFC technology
Like RFID, NFC information is transmitted through electromagnetic induction coupling in the radio frequency part of the spectrum, but there are still great differences between them. First of all, NFC is a wireless connection technology, which can provide simple, safe and fast communication. Its transmission range is smaller than RFID, which can reach several meters or even dozens of meters. However, due to its unique signal attenuation technology, NFC has the characteristics of short distance, high bandwidth and low energy consumption compared with RFID. Secondly, NFC is compatible with the existing contactless smart card technology and has become a formal standard supported by more and more major manufacturers. Thirdly, NFC is a short-distance connection protocol, which provides simple, safe, fast and automatic communication between various devices. Compared with other connection modes in the wireless world, NFC is a close-range private communication mode. Finally, RFID is more used in production, logistics, tracking and asset management, while NFC plays a huge role in the fields of access control, public transportation and mobile payment.
NFC, infrared and Bluetooth are all non-contact transmission modes. They have different technical characteristics and can be used for various purposes. There is no difference in their technology.
NFC mobile phone has built-in NFC chip. Compared with RFID, it is only used as a tag, which increases the function of two-way data transmission. This progress makes it more suitable for electronic money payment. Especially RFID, mutual authentication, dynamic encryption and one-time key (OTP) can be realized on NFC. NFC technology supports many applications, including mobile payment and transaction, peer-to-peer communication and mobile information access. Through NFC mobile phone, people can connect their desired entertainment services and transactions at any place, at any time and through any device, so as to complete payment and obtain poster information. NFC devices can be used as contactless smart cards, reader-writer terminals of smart cards and device-to-device data transmission links. Their applications can be divided into the following four basic types: payment and ticket purchase, electronic tickets, intelligent media and data exchange and transmission. How to use NFC
I. Application of NFC in Enterprises
Various organizations interested in using smart phones as the next generation access cards are conducting technical tests on NFC, which is an ideal enterprise application. In the autumn of 20 1 1, RIM, a BlackBerry manufacturer, and HID Global, a provider of secure access cards and readers, announced that some of RIM's new BlackBerry products will be equipped with the iCLASS digital certificate of HID Global. BlackBerry Bold and Curve phones equipped with NFC are compatible with iCLASS card readers of HID Global, which are widely used in building access control systems, student ID card readers and tracking employee sign-in and attendance.
Employees can also use NFC smartphones and other devices to enter the employee parking lot or canteen and pay for it. NFC tags can be placed inside the conference room, and participants can wave their compatible mobile phones in front of the tags to mute or turn on Wi-Fi.
Second, the application of NFC in government departments
The government can also use NFC to improve public services and improve transportation systems. Some cities and suburbs have begun to use NFC to provide better services for residents and improve their quality of life. The emergence of NFC technology allows users to use smart phones or mobile devices to pay fares, enter parking lots and pay fees, and enter public facilities such as swimming pools or libraries.
France Mobile Contactless Association (AFSCM) is in a leading position in the field of NFC services. According to the organization, France is one of the countries with the largest number of NFC mobile phone users in Europe. AFCSM predicts that by the end of 20 12, 2.5 million French citizens will use NFC devices. France's Cityzi service allows users in some parts of the country to quickly scan their mobile phones to enter the railway station, and can also wave devices on NFC tags that can be seen everywhere to obtain maps, product information or services. There are about 30,000 NFC-compatible parking meters in San Francisco. Sydney, Australia uses NFC tags to guide tourists in rocky areas.
Third, NFC and retail shopping experience.
NFC can expand and enhance the modern shopping experience by combining wireless coupons, membership cards and payment options. Consumers can use personal applications to scan NFC tags on product shelves and get more personalized information about products. For example, if you are allergic to nuts, by scanning the product, your NFC device can automatically detect whether the product contains nuts and make a reminder. Getting information by touching NFC tags, adding them to shopping baskets, getting coupons and other new uses will have an increasing impact on the retail industry.
A strange example of NFC changing the shopping experience comes from the digital chewing gum machine of advertising company Razorfish. Users can choose a variety of digital products, including song downloads, movies, e-books and coupons in specific places, just put coins in them and wave them with NFC-compatible devices.
Fourth, NFC and marketing.
NFC technology has a far-reaching impact on modern marketers. For example, users can wave their hands on NFC posters, advertisements, billboards or movie posters to get information about products or services immediately.
Merchants can place NFC tags in front of stores, so users can automatically log on to social networks such as Foursquare or Facebook to share details or good things with friends. Walibi amusement park in Belgium recently launched its first NFC system, called Walibi Connect, where users can scan NFC wristbands and automatically send updated or favorite activities and attractions to Facebook page. In terms of food service, bars and restaurants can order NFC coasters and other promotional materials from a company called RadipNFC, so that customers can scan them and get more information about stores or advertisers.
Five, * * * enjoy the cooperation between equipment
NFC can also be used as a short-range technology. When several devices are in close proximity, files and other contents can be transferred between these devices. This feature is very useful for places where collaboration is needed, such as sharing files or playing games with multiple people.
Samsung has launched a mobile phone that supports NFC.
There is a function called Android Beam, and other new NFC Android phones also have this function. It can transmit data between several compatible devices via NFC.