Each modern smartphone has several means of wireless communication. For example, LTE is used to transmit data over cellular networks. Bluetooth helps to connect a wireless headset. And what is NFC used for? The answer to this question is contained in this article.
What it is?
NFC is a method of transmitting data over a very short distance. That is, the range of this connection does not exceed 10 cm. This is the main difference between NFC technology and Bluetooth, striking at a distance of 1 to 10 m. That is why this function cannot be used to connect wireless headphones and other similar purposes. NFC-module is sharpened for other actions.
The technology is based on RFID - radio frequency identification. It turns out that, first of all, NFC serves to make the electronic device understand which gadget is attached to it. But the implementation of technology is such that both objects must not necessarily be active. This should only be the device with which information is read. Therefore, nowadays, bank cards with a so-called NFC tag are widely used - it is just passive, while the terminal is equipped with an already active NFC chip (otherwise, it simply could not read the information).
Initially, this technology was created for the rapid pairing of two electronic devices. The fact is that identification via NFC occurs noticeably faster than via Bluetooth - it takes a tenth of a second. Each smartphone contains an NFC chip with unique identification information. When you attach it, for example, to an action camera, she understands that this is your gadget. As a result, the process of setting up an application for remote control is significantly accelerated.
The module operates at a frequency of 13.56 MHz. Large amounts of data cannot be transmitted through it, since the speed varies from 106 Kbps to 848 Kbps.
Which devices have NFC support?
Gradually, the NFC-chip receives an increasing number of electronic gadgets. However, somewhere its use may be limited by software. For example, in the iPhone module is present, but it is used only for contactless payments through Apple Pay . For other tasks, it can not be applied. That is why the connection of wireless accessories to Apple technology is carried out in the old manner. At least it was at the time of this writing. It is possible that in the future, the “apple” giant will reconsider its attitude towards NFC.
Active NFC chips are found in the following devices:
- Tablets (much less common)
- Video cameras;
- Smart watch;
- Fitness bracelets;
- Payment terminals;
- Game consoles (for example, information from Miibo figures is transmitted via NFC);
As for passive NFC, they can be equipped with:
- Bank cards;
- NFC tags and key rings;
- Travel arrangements;
- Accessories for smartphones.
Of course, this is not a complete list, as experiments with technology continue.
What is NFC used for the most?
We have already talked about one rather popular method of using NFC - fast synchronization of two devices with each other. And if earlier most often users connected a smartphone and a camera, now in most cases NFC is required for quick identification of headphones, smart watches, fitness bracelets and other accessories useful for the phone.
Also with the help of NFC a contactless payment method is implemented. The appropriate label have some bank cards. Moreover, you can pay for the goods with a smartphone, if the user is registered in Android Pay . The exception to the rule is Samsung Pay - this technology uses a special magnetic field (MST) instead of NFC.
Another application for relatively new wireless technology is tags. They can be supplied with a smartphone, be bundled with smart home devices, or sold separately. For example, a smart lock can be equipped with an NFC tag - to open it, it is enough to attach a smartphone or a special key ring. Also, the NFC tag may lie somewhere on the table. In this case, the nature of its use is programmed by the user with the help of a special application. For example, a smartphone next to this tag can be configured to turn on the music player or some other actions.
How to use NFC?
There is nothing complicated about using any wireless technology. NFC is no exception to the rule. You just need to activate this chip in the settings. In the case of modern versions of Android, this is done as follows:
- Step 1. Go to Settings .
- Step 2. Go to the " Connections " section.
- Step 3. Visit the “ NFC and Payment ” section.
- Step 4. Activate the appropriate switch. At the same time, most likely, you will have to enable the Android Beam feature.
That's all! If you want to pay for purchases with your smartphone, then get ready to visit the appropriate subsection. Also, you will have to enable unlock by pin-code or fingerprint scanning - for security reasons, you will not be given any other choice.
In the future, the user does not require any special actions. Wanted to make a purchase? Unlocked the smartphone and attached it to the terminal. Would you like to set up communication with the action camera? Launched the appropriate application and attached to the camera your smartphone. In short, all actions are simple and intuitive.
Now you know what NFC is. , выпущенном в 2006 году. For the first time this technology appeared in the Nokia 6131 , released in 2006. But then she failed to become popular, because the corresponding infrastructure simply was not there. Now the function of NFC is present in the terminals, "smart homes" and all kinds of electronic equipment. If your smartphone has a corresponding chip, then you need to rejoice. But you shouldn't be upset because of his absence - many people never used NFC at all without feeling any discomfort from it. However, the cost of the chip has recently become less and less. In this regard, a large number of inexpensive smartphones with NFC-module appears.
Have you tried NFC at work? Or in your hands until there were devices with such a module? Share your thoughts in the comments.