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At present, the standard of flagship mobile phones of various manufacturers has the epitome of NFC function. The popularity of NFC has brought great convenience to our life, and we have got rid of the traditional habit of carrying bus cards and bank cards. A mobile phone equipped with NFC function can do it. Why does the NFC function have such great magic? First, let's take a look at how the NFC function appears. The full name of NFC is near field communication, which is defined as near field communication. At first, a pan-European Union was established to develop an open architecture of NFC and promote its application in mobile phones.

NFC (near field communication for short) is a short-range high-frequency radio technology, with a working frequency of 13.56MHz and a working distance of 10 cm. Its transmission speed is 106 kilobits/sec, 2 12 kilobits/sec or 424 kilobits/sec ... At present, the near field communication has passed the ISO/IEC IS 18092 international standard, ECMA-340 standard and ETSits102. NFC adopts active and passive reading modes. Now, this technology is widely used, which can be used as bus card, access control key, mobile payment, identity recognition, data transmission and so on.

From its function, it is not difficult to see that a small NFC chip can achieve so many functions, which is also its convenience. Today, the author takes Xiaomi mobile phone 6 as the flagship mobile phone of that year as an example to introduce the practicality and usage skills of this NFC function, hoping to bring convenience to readers.

Few users use NFC to transmit files, and the transmission speed is not as fast as Bluetooth, which is faster than NFC. The theory is that the transmission speed of NFC is 424Kbps and Bluetooth 1 Mbps. In terms of transmission distance, NFC transmission distance is 0- 10cm, and Bluetooth transmission distance is 0-10 m. NFC transmission is more suitable for the transmission of some sensitive information or personal data, and Bluetooth is more suitable for long-distance file transmission. NFC has advantages in terms of security. In the process of testing NFC transmission, the author must put two mobile phones close together, otherwise the data transmission will be interrupted, leading to repeated operations. And if no mobile phone supports NFC function, it is faster than Bluetooth.

Operation method: Turn on NFC function-then turn on "Android Beam" function-two mobile phones can simultaneously touch and display the operation method of transferring files.

With this function, people's travel efficiency can be greatly saved, and a mobile phone can do it. At the same time, there will be irregular free card opening activities. Bring your own bus card function. This is one aspect. What if the balance is insufficient? The mobile phone supports bus card recharge, which is very convenient and practical. However, it should be noted that the NFC function must be turned on to brush the bus. Generally speaking, the mobile phone bus card has its convenience advantages, but if the mobile phone is stolen, it is also a chicken rib.

How to operate: You need to open the bus card function on your mobile phone (the bus card in Lingnantong was recently opened free of development fee) to enjoy this function.

1. WeChat recharge

Turn on the NFC function of the mobile phone (NFC function in WeChat also needs to be turned on), stick the bus card to the mobile phone, and then the interface will pop up. Select "WeChat", select the recharge amount, and then pay the recharge. Of course, you can also operate directly on the WeChat payment interface-Life Payment-Bus Card Recharge. It should be noted that the bus card needs to be close to the mobile phone during the recharge process. However, at present, the cities where WeChat supports bus card recharge are Wuhan (wuhan tong), Beijing (Beijing One Card), Guangzhou (Yangchengtong/Lingnantong) and Shenzhen (shenzhen tong).

2. Mobile QQ recharge

The recharge method of mobile QQ is similar to WeChat. Stick the bus card next to the mobile phone, and then the interface will pop up. Select QQ, select the recharge amount, and then pay the recharge. It should be noted that in the process of recharging, the bus card needs to be close to the mobile phone to ensure successful recharging. If QQ is recharged, you need supportive mobile phones, such as Xiaomi 2A and Xiaomi 3 ... I am shocked. .

3. Lingnantong APP

Lingnantong APP is an APP independently developed by Lingnantong Company. It has the functions of inquiring service outlets, inquiring records and online recharge. Not only can the card be recharged by NFC, but also the balance and consumption record of the card can be queried more conveniently! There are two inquiry methods to choose from: NFC mobile phone directly reads the card, and other mobile phones enter the card number for inquiry. Is your hand fast or your mobile phone reads cards fast?

4. Alipay recharge

Log in to Alipay by mobile phone, and select the city card (you can also search directly). It should be noted that the entrance to the nine squares of the city card can be seen by Android users and is not supported by ios; Then use the bus card to read and recharge the phone. If there is no card attached to the back of the phone after the payment is completed, the page will prompt you to attach the card. If the card is not posted within 15 seconds, you will be prompted whether to continue recharging. Press Cancel, and the recharged amount will be returned to the user's Alipay account. Click OK to re-enter the time card pasting page of 15 seconds. It should be noted that Alipay's bus card recharge adaptation is incomplete, and some bus cards cannot be recharged, so other methods are needed.

Of course, you can also recharge the bank's mobile phone. After turning on NFC, you need to stick the bus card on the NFC of the mobile phone, and a window will pop up, so the user can choose the application that needs to be recharged. In addition, you can also use apps such as "Perfect Campus" and "WeChat" to recharge your meal card and fuel card. There is no need to queue up for recharge, and the card is easy to post, and the recharge is completed immediately.

Access card is one of the ways of community safety management now. You have to swipe your access card when you go out and come in. It's a hassle to leave home, especially to visit relatives and friends, and the doorman doesn't know you. He originally wanted to give a friend a surprise, but it turned into a "surprise" for you. Then NFC supporting analog access card can be described as a passport, and the mobile phone must follow when going out. If you forget your mobile phone, there is really nothing you can do.

1. Enter the physical card.

Open Xiaomi wallet, select Xiaomi access card, click Add in the lower right corner, then select the access card, and then stick the access card in the sensing area according to the prompt. Follow the prompts to complete the follow-up. Support ordinary access cards and special-shaped access cards. In the interface of exchanging bus cards, there are access cards. At present, only unencrypted access cards with the frequency of 13.56MHZ are supported in the market. It should be noted that some access cards are available.

2. Customize blank cards

The first supporting scenario of simulated door cards is custom blank cards. After the user selects, the key card can be sent directly to the mobile phone. In this scenario, users need to log off the line (residential property, school or other offline scenes) after opening the card, and the staff can write data to open the door by swiping the card with their mobile phones. Users need to pay attention to the fact that offline access control requires the community owner to provide relevant certificates, otherwise the general property will not give you this permission.

3. Smart door lock card

After the user opens the Mijia smart door lock in Xiaomi's mobile phone, he can use his mobile phone to swipe the card to open the door. After opening, the user needs to open Mijia APP, enter the device management interface, activate the door lock as Mijia NFC card, assign the key, and then swipe the card with the mobile phone to open the door. At the same time, in order to ensure safety, it is necessary to verify fingerprints when swiping cards. However, at present, only Mijia door lock is supported, and it is suggested to adopt the same support for third-party door locks in the later stage.

The third-party Mi Pay is a mobile payment function provided by Xiaomi wallet. Xiaomi's mobile phone supports NFC, and transactions can be paid through POS machines with the logo of UnionPay "China UnionPay Express". Mi Pay has supported 74 banks in China, including Bank of China and Industrial and Commercial Bank of China, and achieved full coverage of prime Bank, and it is still expanding. In addition to payment, Mi Pay continues to expand its usage scenarios, such as ODA, online credit card payment, touch payment and other functions, which simplifies the payment process and optimizes the user experience to a certain extent. Before use, you need to bind a bank card that supports China UnionPay Express (there will be a logo on the bank card, such as Express Pay Express).

Summary: NFC function has played an increasingly important role in daily life, such as POS machine with NFC module for convenient payment, ATM machine with flash payment function for card-free withdrawal, and * * * bicycle unlocked by NFC contact. There are more and more mobile phones with NFC function. Only by fully understanding and understanding it can we play its great role, otherwise you think it is a decoration? In the future, I believe that manufacturers will continue to make more useful attempts and explorations on mobile phone NFC to bring convenience to users. What other ways and skills are there to use NFC? Welcome to discuss.