Today, a client asked me what are the advantages of NFC. Now I would like to answer this question, in fact, NFC was originally just a combination of remote identification and network technology, but now it has developed into wireless connection technology. It can quickly and automatically establish a wireless network, provide a "virtual connection" for cellular devices, Bluetooth devices and Wi-Fi devices, so that electronic devices can communicate in a short distance. The short-distance interaction of NFC greatly simplifies the whole authentication and identification process, making the electronic devices visit each other more directly, more securely and more clearly, and no longer need to hear all kinds of electronic murmur. NFC helps solve the problem of memorizing multiple passwords by combining all identification applications and services on a single device, while ensuring the security of data.
Like RFID, NFC information is also transmitted by electromagnetic induction coupling in the wireless 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 rapid communication. Its transmission range is smaller than that of RFID, and the transmission range of RFID can reach several meters or even dozens of meters. But because NFC adopts 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 also a short-range connection protocol, which provides easy, secure, rapid and automatic communication between various devices. Compared with other connection methods in the wireless world, NFC is a kind of close private communication. Finally, RFID is more used in production, logistics, tracking, asset management, while NFC plays a huge role in access control, public transportation, mobile payment and other fields.
At the same time, NFC is also superior to infrared and Bluetooth transmission. As a consumer-oriented trading mechanism, NFC is faster, more reliable and much simpler than infrared. Compared with Bluetooth, NFC is suitable for short-distance transactions and is suitable for exchanging important data such as financial information or sensitive personal information. Bluetooth can make up for the lack of NFC communication distance and is suitable for long-distance data communication. Therefore, NFC and Bluetooth complement each other and co-exist. In fact, the fast and lightweight NFC protocol can be used to guide the Bluetooth pairing process between two devices, promoting the use of Bluetooth.
NFC mobile phone has a built-in NFC chip, which forms part of the RFID module, which can be used as a RFID passive tag to pay the fee, or as a RFID reader-for data exchange and acquisition. NFC technology supports a variety of applications, including mobile payment and transaction, peer-to-peer communication and mobile information access. Through the NFC mobile phone, people can connect with the entertainment services and transactions they want anywhere, at any time, through any device, so as to complete the payment, get poster information and so on. NFC devices can be used as contactless smart cards, reader terminals for smart cards and device-to-device data transmission links. Their applications can be divided into the following four basic types: for payment and ticket purchase, for electronic ticketing, for intelligent media, and for data exchange and transmission.
|