What does NFC do? How does it work?

Step 1. First of all, the NFC function of the mobile phone is a function that comes with the mobile phone, and if you don't have it, you may not be able to turn it on.

The way to find it is also very simple, pull down the menu bar of the mobile phone and turn on the NFC function.

Step two. Find the desktop of the phone"Wallets"function, open the function after finding it, click on the card card area below, and select the door key function.

Step 3. Take out the access card we have prepared in advance, then click on the simulated physical access card, attach the card to the back of the phone, and then display the mobile phone connection to read the contents of the card.

If the recording is not successful at one time, it is recommended to use the access card to move back and forth in the NFC area above the back of the mobile phone to find the signal until it is recorded.

After the card is successfully read, it will be displayed directly on the page, and then our mobile phone can open the door of the community.

If it shows that a password is required, you can go to the property to ask for the card password, and you can easily copy it successfully.

NFC other features.

Use of transportation card: NFC can be used to simulate a virtual transportation card, and the physical card can be used in the same way.

Data Transfer: Two NFC-owned devices are functionally connected to transfer files for free.

Bus card recharge: There is no need to recharge the office card, and the mobile phone payment can recharge the bus card.

In fact, the NFC function still has a lot of uses, to be developed, and now many mobile phone manufacturers are expanding the function step by step, and I believe that the scope of use in the future will become more and more extensive.

If you're currently using a Vivo phone, NFC provides a simple, touch-based solution for short-range wireless communication between mobile devices, consumer electronics, PCs, and smart control tools, allowing consumers to exchange information, content, and services simply and intuitively.

And the NFC function can be used without the assistance of other accessories.

How to operate the NFC transfer function:

2. The two mobile phones are close to each other back to back (the NFC chip is on the right side of the camera on the back of the machine), when the NFC chip detects other devices, the mobile phone will have sound and vibration prompts, and the screen will shrink at the same time.

3. The mobile phone that is touched first is the sender, and the files received by the receiver are stored in the NFC folder under the USB flash drive of the mobile phone.

Simulate a contactless card, such as an access card, bank card, etc. The card simulation mode is mainly used in contactless mobile payment applications such as shopping malls and transportation, where users only need to hold their mobile phone close to the card reader and enter the password to confirm the transaction or receive the transaction directly.

In this way, the card is powered by the RF domain of the contactless reader, which can work even if the NFC device is out of power. In this application mode, the NFC reading device collects data from the NFC mobile phone with TAG capability, and then transmits the data to the application processing system for processing, and typical applications based on this mode include local payment, access control, electronic ticket application, etc.

According to your description, Samsung S5 supports NFC function: Settings - (Connect & Share) - NFC - Turn on.

NFC is the abbreviation of Near Field Communication, that is, Near Field Communication Technology. NFC is a contactless identification and connectivity technology that enables short-range wireless communication between mobile devices, consumer electronics, PCs, and smart control tools.

However, this function needs to cooperate with third-party software to truly realize its function (such as swiping bus card, access control, ID card, etc.).

A1The operation of the NFC function of the mobile phone is relatively simple, the cost is relatively low, and the confidentiality is also very strong. This also makes it more widely used, but now only a few mobile phones have this function, let's take a look at how to use this function.

2.First of all we should open the settings of the phone, select the network, and then we can select NFC. After you select it, you can successfully turn on this function.

Some mobile phones are turned on by default, if you don't want to turn it on, we can repeat the above operation to turn it off. After turning on this function, we can start to choose what we want to share, and then we can start sharing, and keep the distance between the two devices within 10 centimeters when sharing. Then the system will start to connect automatically.

Click on what you want to send to send it to the other party's device, and wait for a few moments to successfully transmit it.

4.In addition to the above practices, it has other uses. If the audio and access control have NFC functions, we can also control them with mobile phones anytime and anywhere.

At present, the domestic NFC function is not mature enough, so the scope of application is not particularly extensive.

NFC function is relatively good for our life and can bring a lot of benefits to our life. Although it is not widely used in China, its future development will definitely be very good. If your mobile phone has this function, then we can try to use it, it can bring us a lot of convenience.

The main reason why you can't find the NFC function in the settings is that your phone does not support the NFC function, or the operation is incorrect, so let's tell you the correct way to do it:

Operation demo phone Huawei Mate10

1. First turn on your Huawei phone and then tap [Settings] as shown in the figure below

2. After that, click [More Uproar and More Connections] as shown in the figure below

3. Click [NFC] again, as shown in the figure below

4. Finally, enter the NFC interface and click the button behind the opening, as shown in the figure below

After the NFC is turned on, it can be used to pay for messy beams, buses, brush access control, etc.

How to open NFC:

Go to your phone's settings - Other Networks & Connections - turn on the switch for "NFC".

How to operate the NFC transfer function:

2. The two mobile phones are close to each other back to back (the NFC chip is on the right side of the camera on the back of the machine), when the NFC chip detects other devices, the mobile phone will have a sound and vibration remorse prompt, and the screen will be reduced at the same time;

3. The mobile phone that is touched first is the sender, and the files received by the receiver are stored in the NFC folder under the USB flash drive of the mobile phone.

With the NFC function, it is very convenient to turn the mobile phone into an access card and a bus card, and it is very convenient to enter and exit the community and sit on the bus.

We usually go in and out of the community, we have to swipe the access control card, we install the access control card on the mobile phone, it is much more convenient.

Open the settings on your phone, and you'll find that there's a connection and sharing inside.

First, open Connect & Share, select "NFC", put the access card on the back of the phone, and a wallet selection prompt will pop up on the phone. Then select "Wallet".

Second, click "Copy Access Card".

3. Click "Enter Physical Access Card".

Fourth, choose a card face that you like for the access card. Enter the name of your access card in the Card Name field.

Now the card has been successfully opened. When you need to swipe the card to enter and exit the community, you can take the back of the mobile phone and swipe it.

Well, He Ju Lao can now open the door by swiping the back of his mobile phone against the access control when he enters and exits the community. If you are interested, you can try to use this method to enter the bus card and take the bus.

NFC function usage includes: mobile payment, when the wallet is used, when the bus card is used, query, recharge the bus card, used to transfer files, when Bluetooth is used, etc.

1. Mobile payment when the wallet is used. For example, Apple's Apply Pay, Android's UnionPay. (You need to bind a bank card to your mobile phone first, and then put your mobile phone close to the POS machine embedded with the NFC module to make a payment and confirm the transaction.) ）

2. When the bus card is used. Take the subway and bus, and use it as a bus card. (Hold the phone where the ticket password is stored near the card reader.) ）

3. Inquire and recharge the bus card. You can check the balance of the bus card, and you can directly recharge the bus card if you change it.

4. Used to transfer files. The same series of mobile phones with NFC function, turn on NFC function, and the two mobile phones can carry out point-to-point data transmission when they are close to each other, such as mutual transmission and exchange of contacts.

5. When Bluetooth is used. The usage is the same as Bluetooth, as long as the devices at both ends have NFC function.

How NFC works:

NFC is a short-range high-frequency radio technology, NFCIP-1 standard stipulates that the communication distance of NFC is less than 10 cm, the operating frequency, and the transmission speed is 106kbits, 212kbits or 424kbits. The NFCIP-1 standard specifies the transmission speed, codec method, modulation scheme, and frame format of the RF interface of NFC devices in detail, and the transmission protocol of NFC is also defined in this standard, including the startup protocol and data exchange method.

NFC working modes are divided into passive mode and active mode. In passive mode, the NFC initiator (also known as the master device) needs a power supply device, and the master device uses the energy of the power supply device to provide the RF field and sends data to the NFC target device (also known as the slave device) at one of 106 kbps, 212 kbps, or 424 kbps.