I will take you into NFC technology in the past and present.

NFC technology, also known as near field communication or short-range wireless communication, is a short-range high-frequency wireless communication technology that allows non-contact point-to-point data transmission between electronic devices to exchange data. The technology evolved from contactless radio frequency identification (RFID), developed jointly by Philips and Sony, based on RFID and interconnect technology. Near field communication is a short-range, high-frequency radio technology that operates at a distance of 20 cm at a frequency of 13.56 MHz. The transmission speed is 106 Kbit/s, 212 Kbit/s or 424 Kbit/s.

It can exchange data in both active and passive modes. In passive mode, the device that initiates near field communication, also known as the initiating device (master device), provides an RF-field throughout the communication process. It can choose one of 106 kbps, 212 kbps or 424 kbps to send data to another device. The other device, called the target device (slave device), does not have to generate a radio frequency field, but uses load modulation technology to transmit data back to the initiating device at the same speed. In active mode, both the initiating device and the target device generate their own RF fields for communication.

What are the advantages of NFC technology?

Like RFID, NFC information is also transmitted through the electromagnetic induction coupling of 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, secure and fast communication. Its transmission range is smaller than that of RFID. The transmission range of RFID can reach several meters or even tens of meters, but because NFC adopts unique signal attenuation technology, Compared with RFID, NFC has the characteristics of close distance, high bandwidth and low energy consumption. Second, NFC is compatible with existing contactless smart card technology and has become the official standard supported by more and more major vendors. Again, NFC is a close-range connection protocol that provides easy, secure, fast, and automatic communication between devices. Compared to other connections in the wireless world, NFC is a close-range, private communication method.

How to use NFC technology?

1, imitation credit card mode

In the imitation credit card mode, the near field communication device can be used as a credit card, debit card, identification card, or ticket. The credit card mode allows for the "mobile wallet" feature.

2, reading mode

In the read mode, the near field communication device can read the tag. This is similar to how barcode scanning works today. For example, you can use the app on your phone to scan a barcode for additional information. Ultimately, near field communication will replace bar code reading into a more popular technology.

3, P2P mode (point-to-point mode)

In the P2P mode, information can be exchanged between near field communication devices. For example, two phones with near-field communication capabilities can exchange contacts, which is similar to the way companies exchange contacts such as Bump on iPhones and Android phones, but they use different technologies.

What is the potential of NFC technology?

With the development of mobile payment, according to statistics, 80% of users in China currently use mobile payment every day, and most of them are mainly based on barcode payment (ie, barcode and QR code payment).

However, the bar code payment itself is more risky. For example, some lawless elements replace their own payment code with the merchant's QR code, or forge a two-dimensional code, causing money to flow into the fraudster's hands; secretly scanning the user's payment code for theft. Brush; sometimes the scan code will also jump to the phishing website or even the QR code still hides the virus. Everything about this and so on tells the lack of bar code payment.

Compared with NFC technology, bar code payment is almost "completed" by NFC technology. First, the NFC payment distance is within 10 cm, and the confidentiality and security of data transmission are guaranteed. Secondly, the NFC mobile phone adopts the combination of SE chip hardware encryption and software encryption, and the data transmission such as ID and key can be completed in less than 0.1 seconds, and the security of payment is greatly guaranteed. At the same time, bar code payment requires network support, while NFC system does not need it. In a series of places such as underground supermarkets and underground parking lots, the performance of bar code payment is often unsatisfactory.

In this comparison, it can be seen that the NFC technology is only a substitute for the bar code payment on the mobile payment end, which is enough to guarantee the future market of NFC technology. No matter whether the advantages of FNC technology in the fields of access control and electronic label are still obvious, it can be said that NFC technology can be expected in the future.

However, although NFC technology has various benefits, the terminal has always been an important obstacle to the development of NFC technology. Taking the application of the mobile payment terminal as an example, the NFC mobile payment method is based on the NFC chip. In addition to the mobile terminal, the merchant also needs to be equipped with an NFC-enabled terminal device, and the cost is not low. In addition, NFC users have fewer use scenarios, and NFC in China faces the obstacle of users using QR code payment habits.

However, with the continuous upgrading of smartphones, NFC technology has gradually become the standard for smartphones. At the same time, with the advancement of technology, the iteration of mobile payment methods is inevitable. Although the long road is long, NFC technology is still expected to succeed in its superior position.

The road is long and the NFC will go up and down.