1. When the central bank's
digital currency is used, the mobile phone must have NFC function to pay.
2. NFC should be a way of digital currency transaction, as far as internal test is concerned. The official explanation is that the digital currency wallet has the functions of scan code payment, payment code, touch and remittance. NFC is the hardware condition of near-field NFC payment, and NFC should not be the necessary condition of digital RMB.
3. NFC technology evolved from non-contact radio frequency identification (RFID), and was jointly developed by Philips semiconctor (now NXP semiconctor), Nokia and Sony. Its foundation is RFID and interconnection technology. Near field communication is a short-range high-frequency radio technology, operating at 13.56MHz frequency within 20 cm distance. Its transmission speed can be 106 kbit / s, 212 kbit / s or 424 kbit / s. Near field communication has become ISO / IEC is 18092 international standard, emca-340 standard and ETSI TS 102 190 standard. NFC adopts active and passive reading modes
NFC chip has the function of mutual communication and
computing power. It also contains encryption logic circuit in felica standard, and the later Mifare standard also adds encryption / decryption mole (SAM)
NFC standard is compatible with Sony's felikatm standard and ISO 14443 a, B, that is, using Philips's Mifare standard. In the instry, it is referred to as typea, TypeB and typef, where a and B are Mifare standards and F is felica standards.
4. NFC near-field communication technology is evolved from the integration of non-contact radio frequency identification (RFID) and interconnection technology. It combines inctive card reader, inctive card and point-to-point functions on a single chip, and can identify and exchange data with compatible devices in a short distance. The working frequency is 13.56MHz. However, users of this mobile payment scheme must change their special mobile phones. At present, this technology is widely used in Japan and South Korea. Mobile phone users can travel all over the country with mobile phones equipped with payment function: their mobile phones can be used for airport boarding verification, building access key, traffic card, credit card, payment card, etc
how to use NFC function:
1. Click Settings - network, and then click NFC to successfully start. Meizu MX3 is turned on by default. If you don't need to use this function, you can turn it off by clicking once more
2. After opening NFC, select what you want to share, and then keep the distance between the two devices back to back within 10 cm
3, the system will start to connect, and then click the thing to send to the other party's device. The transmission speed is not bad.
5. Near field communication (NFC), also known as short-range wireless communication, is a short-range high-frequency wireless communication technology, which allows non-contact point-to-point data transmission (within 10 cm) between electronic devices to exchange data. This technology evolved from contactless radio frequency identification (RFID) and is downward compatible with RFID. It was first promoted by Philips, Nokia and Sony and may be mainly used in mobile phones and other handheld devices. Because of the natural security of near-field communication, NFC technology is considered to have great application prospects in the field of mobile payment[ 1] NFC integrates contactless reader, contactless card and peer-to-peer functions into a single chip, creating countless new opportunities for consumers' lifestyle. This is an open interface platform, which can quickly and actively set up the wireless network. It is also a virtual connector, serving the existing cellular network, Bluetooth and wireless 802.11 devices. NFC is compatible with Sony's felikatm card and the widely established contactless smart card architecture, which is based on ISO 14443 A and uses Philips's Mifare? Technology.
6. Like RFID, NFC information is also transmitted by electromagnetic inction coupling in the radio frequency part of the spectrum, but there is still a big difference between the two. First of all, NFC is a wireless connection technology that provides easy, safe and fast communication, and its transmission range is smaller than 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 also a close connection protocol, which provides easy, safe, fast and automatic communication between various devices. Compared with other connection modes in the wireless world, NFC is a kind of close range private communication mode
NFC, infrared and Bluetooth are the same non-contact transmission modes. They have different technical characteristics and can be used for different purposes. There is no difference in their technology
NFC mobile phone has built-in NFC chip, which adds the function of two-way data transmission to RFID, which is only used as a tag. This progress makes it more suitable for e-money payment; In particular, RFID can not achieve, mutual authentication and dynamic encryption and one-time key (OTP) can be achieved on NFC. NFC technology supports a variety of applications, including mobile payment and transaction, peer-to-peer communication and mobile information access. Through NFC mobile phones, people can connect with the entertainment services and transactions they want to get at any place, at any time, through any device, so as to complete payment, obtain poster information, etc. NFC devices can be used as contactless smart cards, smart card reader terminals and device to device data transmission links. Its applications can be divided into the following four basic types: for payment and ticket purchase, for electronic tickets, for intelligent media, and for data exchange and transmission
7. Near field communication (NFC), also known as short-range wireless communication, is a short-range high-frequency wireless communication technology, which allows non-contact point-to-point data transmission (within 10 cm) between electronic devices to exchange data. This technology evolved from contactless radio frequency identification (RFID) and is downward compatible with RFID. It was first promoted by Philips, Nokia and Sony and may be mainly used in mobile phones and other handheld devices. Because of the natural security of near-field communication, NFC technology is considered to have great application prospects in the field of mobile payment[ 1]
NFC
integrates contactless reader, contactless card and peer-to-peer functions into a single chip, creating countless new opportunities for consumers' lifestyle. This is an open interface platform, which can quickly and actively set up the wireless network. It is also a virtual connector, serving the existing cellular network, Bluetooth and wireless
802.11
devices
NFC is compatible with Sony's felikatm card and the widely established contactless smart card architecture, which is based on ISO
14443
A and uses Philips's Mifare? Technology.
8. China now has cloud flash payment, which relies on NFC functions of mobile phones, such as apple pay, Samsung pay and HCE cloud flash payment (used by other Android systems except apple and Samsung). If your mobile phone supports NFC, apple mobile phone can make apple pay payment by binding the credit card to wallet, Samsung mobile phone can bind the credit card to Samsung pay, and other Android mobile phones can download the approved app and bind the credit card. In this way, you don't need to scan the code, swipe the card with the credit card, and flash pay with the mobile phone. For example, I used CCB's credit card, Huawei mate7, downloaded CCB's "Suixin" app, bound the credit card, before Carrefour supermarket double weekend cloud flash paid 50 yuan minus 20 yuan, now McDonald's Yunshan paid a discount on Saturday!
