Comprehensive application areas of NFC

Intelligent identification, as the front end of information collection for the Internet of Things, plays a fundamental role in the realization of the Internet of Things. NFC is not only used in the payment field, but also in the non-payment field. With the rise of the cloud concept, there is also a flourishing application situation, giving It has brought great convenience to people's lives, and its tentacles have reached every corner of our lives.

1. Overview of NFC technology

The full English name of NFC is Near Field Communication, short-range wireless communication. It is a wireless technology initiated by NXP and jointly promoted by famous manufacturers such as Nokia and Sony. NFC evolved from the integration of contactless radio frequency identification (RFID) and interconnection technology. It combines inductive card reading on a single chip. It features sensors, proximity cards and point-to-point functions, enabling identification and data exchange with compatible devices over short distances.

This technology was originally a simple merger of RFID technology and network technology. It has now evolved into a short-distance wireless communication technology and is developing very rapidly. NFC has the characteristics of two-way connection and identification, operates in the 13.56MHz frequency range, and has an operating distance of nearly 10 centimeters. NFC technology promotes standardization under the framework of ISO 18092, ECMA 340 and ETSI TS 102 190, and is also compatible with the widely used ISO 14443 Type-A, B and Felica standard contactless smart cards.

2. NFC has three working modes:

•Card Emulation mode: mobile payment, tickets, channel control, toll booths, parking cards, etc.

•Peer-to-Peer communication mode: data exchange: fast, easy and convenient to achieve device establishment, configuration and connection

•Reader mode: content distribution, information access, advertising

3. The latest NXP NFC mobile device payment solution

1. Overview of NXP NFC chip

NXP NFC chips PN66T and PN548C2 comply with the latest NFC specifications set by the European Telecommunications Standards Institute (ETSI) and can provide mobile phone manufacturers and mobile operators with a fully compatible platform to launch the next generation of NFC devices and services. PN66T is fully compatible with all released NFC specifications that connect the SIM card and the Host Controller Interface (HCI) through the Single Wire Protocol (SWP).

In addition, NXP works closely with leading SIM card manufacturers such as Gemalto, Oberthur Technologies and Giesecke & Devrient to ensure interoperability of SWP interfaces including MIFARE technology. PN66T is PN548C2 plus NXP’s SMART MX2 security module. The PN66T hardware pair is fully PIN compatible with the PN548C2 BGA version. PN66T is the latest generation of NFC full terminal solution chip.

2. Features of PN66T:

• PN66T is the only mobile application product among security components that has passed Common Criteria EAL6+ certification, providing the highest level of data protection and encryption for end users, bank card issuers and smartphone manufacturers.

• PN66T has passed EMVCo (Europay, MasterCard and Visa) certification, ensuring that secure payment services can be widely deployed around the world, while also ensuring interoperability with traditional and future payment infrastructure.

• PN66T enables integrated deployment of many transaction-related applications, including mobile payment, Access Control, public transportation and identity verification.

3. PN66T and PN548C2 have the following advantages:

• ARM cortex M0 core

• Flexible slave NFC Forum host interface complies with National Standards (NCI)

•Dual SWP interface

• Optional platform-independent software stack

• Provide GPIO PORT for control by external units

• Wider voltage connection support.

•Support safety unit control interface

•Supports the latest RF protocol standards (ISO18000-3, Kovio tags, HID iClass tags)

•Supports multiple RF interface protocols: ISO14443A/B, ISO15693, MIFARE, Felica.

4. SmartMX P61N1M3 features:

• SmartMX2

• C090NV

•SPI

• JavaCard GP 2.2 OS

　• MIFARE

　•DESFIRE

　• CC EAL6+ /EMVCO

•Multiple Applets

5. NFC PN66T/ PN548C2 hardware circuit block diagram:

NFC

The NFC electronic wallet function uses mobile devices such as mobile phones as a transaction platform. The PN66T NFC controller and the built-in security module realize mobile device payment and data exchange functions.

NFC-SWP software architecture block diagram:

Standardize the software architecture and functions of each unit of NFC-SWP terminals

NFC and SIM card security module interface circuit, NFC IC with SWP first-line interface can realize data communication with NFC-SIM card, currently China Mobile leads the NFC mobile payment solution.

      4. Advantages and Disadvantages of NFC Payment

Advantages: Compared with traditional short-range communication payment, NFC payment has the advantages of security and fast connection establishment. The payment distance is less than 10 centimeters, which can avoid mutual interference between devices. In addition, the time it takes to establish a connection is less than 0.1 seconds, which better ensures the security of user payment and has low cost.

●Disadvantages: The popularization of NFC requires a large number of hardware devices to support it, and the prerequisite for mobile phone manufacturers and financial institutions to deploy a large number of hardware devices is a large enough market. In addition, this payment method also faces problems such as whose standard it should be used, what to do if the user loses his mobile phone, and how to set the payment limit.

5. NFC technology applications and scenarios

NFC devices can be used as contactless smart cards, smart card reader and writer terminals, and device-to-device data transmission links. It has a wide range of applications, and NFC applications can be divided into four basic types. For applications such as access control or transportation/event ticketing, users simply hold the device with the ticket or access code Stored close to the reader. It can also be used for simple data retrieval applications, such as reading URLs from smart tags on posters.

Contact and confirm. Apps such as mobile payment require users to enter a password to confirm the transaction or just accept the transaction.

Contact, connection. By connecting two NFC-enabled devices, point-to-point network data transmission can be performed, such as downloading music, exchanging images, or synchronizing address books, etc.

Contact and explore. NFC devices may provide more than one function, and consumers can explore and understand the functions of the device to find out the potential functions and services of the NFC device.

1. NFC is used for payment and ticket purchase, such as: China Merchants Bank’s flash pass, etc.

2. NFC is used in smart media. For phones equipped with NFC, using its reader/writer function, users can obtain rich information or download related content simply by touching the smart media.

3. NFC is used for electronic tickets. Electronic tickets are electronically stored access rights that consumers can purchase to obtain admission to entertainment venues.

4. NFC is used for connection and as a wireless startup device. Consumers hope that wireless connections will be simple and convenient, but the convenience and mobility promised to consumers have not yet been fulfilled.

Because NFC payment has high security, this technology is considered by the industry to have great development prospects in fields such as mobile payment. As a mature payment technology, NFC has been applied in many fields. According to industry insiders, once the industry standards for mobile payment are unified, NFC payment is likely to become the mainstream mobile payment method in the future.