How practical is NFC, is it really just needed?

NFC function is a function that people usually use to swipe access control or swipe some bull cards, this function has a certain practicality, but I personally think it is not just needed,Because many other devices or cards can also replace these functions, but it is a little more troublesome. <>

Now some of the smart wearable devices that people have launched, such as bracelets and smart watches, basically come with NFC functions and mobile phones can be connected to brush the bus or do some other activities that need to brush NFC, this kind of equipment is basically cheap, expensive and cheap, that is, one or two hundred yuan expensive, maybe thousands of yuan, because Apple's, some wearable devices and Samsung are basically more than 1000 yuan,And some of our domestic wearable devices are relatively cheaper, such as the Xiaomi series of bracelets, which are basically about 200 yuan. <>

We can replace this NFC function through other functions of the mobile phone, most mobile phones do not come with this function, because this function will increase the cost of the mobile phone, and people usually use it very little, after all, not everyone takes the bus every day, and not everyone uses a mobile phone, there is a habit of swiping a bus card, that is, a matter of a while, there is no need to get a mobile phone with NFC function,Because the cost of this mobile phone will naturally rise, people will not choose to spend hundreds of dollars more for such a feature. <>

This function is a icing on the cake function, with of course, people's lives can play a certain convenient effect, but there is no and not too much impact on people's lives, may brush access control, some access control it can be used and some can not be used, when you get on the bus, basically you take the bus for a long time are bus cards, it really doesn't work, you can also choose to complete the payment through other online payment platforms, basically not much worse. There is really no need to buy a mobile phone with NFC function.

Based on personal experience, the practicality is not high. My mobile phone has NFC function, but I have hardly used it, the access control of the community can not be used, and the bus is also used, and the permission is a big problem.

NFC is very convenient, even if the phone is out of battery. After this function is fully popularized, it will slowly become a rigid need.

Most high-end phones have NFC, but this feature may not be very useful, it seems to be similar to Bluetooth, and it seems that no one uses it now.

Many people will use NFC to swipe cards, and they will also use them to swipe bus cards, which is also very practical. It's not too rigid, and it takes some time to open NFC, so it's more troublesome, so it's better to swipe the bus card directly or scan Alipay's verification code.

I don't think it's very practical, and it's not just needed, because most of the situations in life don't need this function.

Many young people use NFC when they go out or use their cards. It still depends on which city it is in, some places use it more frequently, and some places may not use it.

The full name of NFC is Near Field Communication, that is, "Near Field Communication", also known as "Near Field Wireless Communication". It is based on contactless radio frequency identification (RFID) technology, combined with wireless interconnection technology.

When it comes to short-range wireless communication technology, you may quickly associate it with Bluetooth, indeed, NFC and Bluetooth themselves are both short-range communication technologies, but they do have a gap between them.

The establishment time is different; NFC communication setup procedure is simple, communication establishment time is very short, only about left; The Bluetooth communication setup procedure is relatively complex, and the communication establishment time is long, about 6s.

The transmission distance is different; NFC transmission distance is only 10cm, while Bluetooth transmission distance can reach 10m, but NFC is better than Bluetooth in terms of transmission power consumption and security. The transmission speed and operating frequency are different; NFC works at a maximum transmission speed of 424Kbits, while Bluetooth works at a maximum transmission speed of 424Kbits.

NFC is a kind of near-field communication technology, and its application is very wide. It can be broadly divided into three main categories.

Payment role. We are very familiar with this function, often used when swiping the subway card, ideally, NFC can be swiped card or swipe POS machine, but because of the missed best promotion period of the technology, so we actually prefer to use the way of scanning *** payment.

Security role. The application of NFC security is mainly to set the mobile phone as an access card, electronic tickets and so on.

NFC virtual access control card is to write the existing access card data into the NFC of the mobile phone, so that there is no need to use smart cards, so that the Tianwang machine can realize the door forest function, and the mobile phone can be used to realize the access control function, and can realize remote modification and configuration.

Labeling roles. The application of NFC tags is to write some information into an NFC tag, and you can get relevant information immediately by waving it on the NFC tag with your NFC mobile phone. For example, merchants can put NFC tags containing Haixian newspapers, ** information, and advertisements at the door of the store, and users can use NFC mobile phones to obtain relevant information according to their own needs, and can log in to social networks to answer the network, and share Xidan Pai Hui Festival or good things with friends, so the use of NFC in life is still very large.

Different mobile phones turn on the NFC function in the same way, and you can turn on the NFC function by yourself. Tap the "Settings" icon in the list of desktop applications to enter the settings interface. Find the "More" option in the settings interface and tap to enter.

Tick the checkbox button for the NFC function and allow reading and writing tags and transferring data between devices. In this way, the NFC function of the mobile phone is turned on, and the method of opening the function on different mobile phones is different, and it should be operated according to the mobile phone. Generally, the NFC function can be set under the "Wireless & Network" interface.

After turning on the NFC function of the mobile phone, open the Alipay wallet software in the mobile phone and log in to your Alipay account. Switch to the "More" interface in the Alipay interface. In this interface, you will see the NFC function (phones that do not support NFC may not show it)!

Click on the "NFC function" option, and then press the switch button in the new interface to turn on Alipay's NFC function. After opening, you can use the NFC tag of the mobile phone (usually at the back cover of the mobile phone) to get close to the bus card, bank card and other cards, at this time Alipay will automatically read the card information (if you can't read it, please close to the NFC tag, or restart the phone).

Scan your bus card, and the bus card information appears, which can display the balance display and recent transaction records. Click "View Last 10 Transaction History" to view the recent bus card usage history.

In addition to the bus card can be read through NFC, you can also use your mobile phone to read cards such as bank cards. Through the NFC function of Alipay wallet, you can quickly manage IC cards, realize the high interconnection between cards and Alipay, and complete a variety of functions such as transfer, recharge, and transaction inquiry.

To put it bluntly, it's almost the same as Bluetooth.

NFC's working modes are divided into card, peer-to-peer and card reader modes, which have certain similarities with Bluetooth functions. Compared with the Bluetooth connection mode, NFC will be more convenient, because it can be easily transmitted without going through a complicated setup procedure, and the power is lower than Bluetooth, and the speed is slower. Fortunately, it does not need to bring a power supply to use, the convenience has been well guaranteed, the Bluetooth function and the NFC function are complementary, because the Bluetooth function has a long transmission distance, and the NFC function has high privacy, which can effectively protect personal privacy.

What exactly is NFC used for on mobile phones? 4 useful functions that don't have to be wasted.

Hello, there are several main reasons why NFC is not recommended. First of all, NFC technology is not very secure and easy to be hacked. Secondly, the transmission distance of NFC signals is very limited, only about a few centimeters, which is not convenient for long-distance data transmission.

In addition, the application scenarios of NFC technology are relatively limited, and can only be used in some specific occasions such as mobile payment and identity verification, and cannot achieve more functions. Therefore, on the whole, there are certain risks and limitations in the use of NFC technology, and it is recommended to carefully consider it in practical application and choose a more secure and suitable technical solution.