Read NFC. NFC: Three mysterious letters that are unclear what to do. What gadgets are equipped with an NFC module

Suppose you found the NFC function in the phone - what you do not know, and what happens when it is activated you also do not guess.

In this case, the material below will be incredibly useful, and you will open it for your other measurement of its use.

If you know already about NFC technology in the phone that it is and how to use it, we will try to expand the boundaries of your knowledge.

So, let's begin.

Abbreviation NFC.

The mysterious figure of three Latin letters in your this is not at all veiled crucia, and an indication of the use of technology, the full name of which sounds like Near Field Communication.

It appeared relatively recently, but he received the greatest distribution thanks to mobile technologies.

As it turned out, it is an optimal tool that facilitates, and in some cases accelerates the user with the skillful use.

Conditionally this abbreviation can be deciphered as "nearby communication". Next to it immediately in several senses.

First, the transfer of information with its help can be carried out at a minimum distance between the objects of the interaction, which makes no more pair of three centimeters.

And secondly, the amount of information transmitted in the process is negligible, despite the fact that this technology is used smart devices Type.

The NFC abbreviation is associated with another EMV abbreviation, the name of which is not necessary to memorize.

She, in turn, is a progenitor of technology and describes the possibility of using smart cards for non-contact operations.

If desired, the process can be studied in more detail, Falling Standard 14443.

But bypassing the theory to fully appreciate the benefits of technology, turn to practice and learn how to use in the mobile device NFC.

fig. 1 - NFC logo

Where NFC is being introduced

Yes, indeed, NFC technology extends not only to phones, but also on other gadgets, for example, the tablet may also have a similar functionality, especially since this allows technology.

The NFC transmitter / receiver takes really little space and in some cases it is placed without any problems between the cover lid and.

Recognize devices equipped with such a module, on the appropriate logo placed on the housing.

Note: Often the label with the corresponding logo directly indicates the location of the corresponding antenna, and allows you to make a context between objects much faster

As for other objects, other daily used objects can be implemented into reading and recording devices.

The same technology is applied when paying for pass cards in public transport, for example, in the subway.

And among the household appliances, modern refrigerators with smart functions are allocated to the championship in using this technology.

The technology itself is not strongly limited to standards, therefore it has quite wide prospects for its development, and many manufacturers of equipment and new technologies are actively used by this.

It also concerns the developers of the hardware of devices, and software, so new gadgets and applications that make it possible to effectively use NFC.

Now consider how exactly they are used.

fig. 2 - Connecting in the Android system

Methods of interaction

The uniqueness of the NFC technology is that it can be used in three different directions. These include:

Data exchange.
Reading and writing data.
Emulation of smart cards.

The first version of the interaction implies the use of equivalent devices.

In an English-language version, the peer-to-peer characteristic is used for such interaction, which indicates that the data is transmitted from the same object.

In this case, both objects will have modules with receivers that can interact in two directions - reading and writing information.

A vivid example of such an interaction can be considered the transfer of data from the smartphone to the smartphone, or from the smartphone to. The subjects of interaction in this case can be:

The second option to interact read and write data can be carried out not only between devices.

It is much more often used to create and read tags.

The feature of these tags is that they are miniature hidden chips that do not consume a large amount of energy.

The last option of interaction is emulation.

It implies the use of a smartphone, as a non-contact payment for payment cards of the type of payment cards used to pay for travel, but in a wider range of the assortment thanks to the services like Google Wallet.

NFC: What is what is needed, how does it work?

NFC function in the phone - what is it? For which it is used and how it can be used in everyday life. Description of technology and features of its operation

Hidden disadvantages of technology

Along with the advantages of NFC as low power consumption and minimum implementation cost, this technology has a number of disadvantages that are manifested immediately after the start of operation.

Some of them have to put up waiting for the improvement of technologists, and some of them cause it to limit the scope of application.

So, the first of them is a small radius of the signal.

This disadvantage, on the one hand, creates inconvenience when, for example, the user needs to create a connection as quickly as possible, but on the other hand it can be assessed and as an advantage.

The essence is that it is thus ensured by a rather high degree of security that minimizes the likelihood of a random execution of the command, for example, in the process of reading the code or links from the sticker label.

But there are more serious disadvantages.

So, the lack of clear standards leads to an uncontrolled increase in the number of modifications of technology, from which the consumer itself suffers.

For example, some companies such as or Sony are finalizing the transfer technology, produce their own consumables in the form of Tectiles, compatible exclusively with their production devices.

And this leads to the fact that the user rushes into the scope of inconvenience.

However, there is another disadvantage that manifests itself when trying to master the system independently.

Of course, progress in recent years has led to the fact that the use of NFC is becoming increasingly popular and more and more often people are asked by any questions for which the NFC is in the phone, what it is and what is the benefit of it.

NFC - scenario of use, for which it is needed, where to buy?

Today I want to talk about the possible scenarios of use in the usual life of NFC technology. Payment systems, contactless payments are good, but in addition to the scripts of the use of markets imposed by leaders, NFC can also be used in their own tasks. This is my personal experience And only my thoughts on this issue. Only an idea is important. How to use it to you - this is another question.

With the help of technologyNFC You can not only transmit data from one cell to another, but also to pay for the purchase (for example, the acquisition of food products in the supermarket).

Decoding is simple - Near.FieldCommunicationthat, with the literal translation into Russian, denotes the communications of the near field or the connection in the nearest space.

Initially, this technology was used for a quick contactless payment. Now NFC replaces the plastic bank card and Bluetooth and combines them in one system, which is quite practical for use invention. Want to facilitate the process of paying purchases or file transfer? We'll figure it out how to find out if there is NFC on the phone, tablet or laptop.

History of technology appearance in the phone

It is believed that this is a relatively young development. Its appearance is referred to 2004: during this period, the three glorified companies Nokia, Philipps and Sony are organized by the NFC Forum, and three years later they integrate the first NFC labels into the Nokia phone.

Smartphones supporting NFC

It should be noted that not all phones have the support of this data transfer technology. It is known that support for NFC has such devices as:

Apple iPhone (starting with 6s and 6s Plus models);
novelty Galaxy line from Samsung and smartphones of other manufacturers on the Android platform (starting with Android0).

Check the device for NFC

Wanted to try technology in practice, but do not know if there is such an opportunity on your device? Let's check.

To do this, carefully open the back cover of the smartphone or tablet, in a situation, if it can move away without damage and inspect the gadget battery.

When the NFC is presented, you will see this abbreviation precisely there. If the phone / tablet cover is not removed, then the corresponding icon or abbreviation will be located on the outside.

If you for some reason you do not want or you cannot remove the cover, make sure that this method of communication you can in the device settings.

Find the "Wireless Networks" tab, then "more ..." and if NFC is available on the device, then there will be an appropriate item.

What it looks like, look in the photo above or in Video instructions onas clean correctlyNFC in the phone:

Activation NFC.

In case you have discovered it on your device, you need to activate and access to technology.NFC. This can be done as follows:

go to "Settings" and then "Wireless Networks", "More ...", where you could earlier to make sure NFC is available;
confirm by clicking on "Allow data exchange when combined\u003e Device name\u003e with another";
android Beam is immediately activated on the Android-KMartphone. If this did not happen, click on it and choose "Yes" so as not to disrupt the system;

NFC can be activated in the fast menu, where Wi-Fi is turned on. This is done by touching NFC tags.

Look more in the video:

What if the device does not support NFC?

Do not worry if you do not detect the built-in function, there is a way to connect NFC to the device. But this can be done only under the condition that the panel cover on the circulation and the hole for the SIM card on your smartphone / tablet are removable . Install NFC in this case will not be difficult.

Installing the NFC module

The optimal solution is to install a special module - an external communication device. It is compatible with almost all smartphones, simply in use and gives access to NFC without buying new television.

Types of modules and methods for their implementation

Main types: chips, SIM cards, external devices, stickers. The last of them are two types: passive - which are not allowed to exchange data, and active - for transmission use Bluetooth and Wi-Fi communication channels, which significantly increases power consumption.

Such stickers are attached to the outer shell of the phone, which is also not very practical.

The most popular are the following of them:

NFC SIM card. Now accessible to the purchase by most mobile operators. You can learn about this SIM in the communication salon. You only need to install the ready-made card into your phone or tablet. This type of module is the most accessible and easy to install.
NFC antenna. The second method for which you will need to purchase a NFC antenna. You can do it in the communication salon. Next the antenna joins the SIM card and is inserted into the device.

As you have already seen, install the module quite simple and safe : You do not need to download additional applications or programs. However, these services are not fully replaced. android app Pay, but only are some of the numerous functions.

How to use a nfc label

The NFC label is a miniature device in the form of a chip that can be attached almost everywhere: starting from the phone and ending with the introduction of under the skin!

We will not use such radical methods, but it is worth noting that contacts, settings, URL and other data and commands can be placed in the chip. The label is able to support all the gadgets.

Data exchange via NFC

Technology can be used to transfer files.

For data transfer, you must draw the following steps:

make sure you have passed the activation of NFS and Android BEM;
remove the locking device, exit the "sleep mode";
check the detection of devices with each other;
connect;
transmit data between devices;
at the end, a specific sound signal will be performed.

However, not all file types you can transmit in this way. For example, it is not possible to send applications.

Advantages and Disadvantages of NFC

The main advantages are:

low price;
small dimensions of the device;
high transfer rate;
support practically on all mobile devices.

It is worth allocating and minuses:

relatively small radius of action;
not all devices are equipped with a NFC chip.

So, thanks to these notes, you learned quick and simple ways Checking your device to transfer information and interaction with other technical means Using Near Field Communication. Follow simple instructions This article, you can also find out on your own, is it in the smartphone this technology, you can integrate NFC into your phone and transfer files At high speed.

Modern smartphones are very functional and contain many different technologies that are certainly useful and necessary, but not always understandable to the simple user. The same applies to Near Field Communication or "near contactless communication". In the characteristics of the smartphone, the technology is denoted by the abbreviationNfc that is in the phone They know a few, so often when buying a new smartphone doubts whether such a function is really necessary. Let's talk about it in more detail and discern what it is for the opportunity and how it is useful to the owner.

Nfc that is in the phone

So, NFC is a high-frequency module wireless communication with a limited radius of action. In order to eliminate the interception of data, the radius does not exceed 10 centimeters, but more and more often. To transfer information from one device to another, you must lower their sensors as close as possible.

The technology operates at high speed (the connection time between two sensors is not more than 0.1 seconds). In general, the work is built on radio frequency identification, data from transponders through radio signals is transmitted from one gadget to another.

Today, such a module is found mainly in the gadgets on the Android platform, it is introduced not only in expensive devices, but also in the model mode price category. However, often modules are found on other models of devices, but they are often limited to one function. Data on transponders can be different, due to which the phone can perform in a variety of roles. It is very convenient, first of all, due to the fact that the gadget has long been an integral part of a person's life and accompanies him everywhere.

How can I use the phone with the NFC module

Technology is still gaining popularity and are not widespread everywhere. So few today knowNfc that is in the phone. Nevertheless, even in small, removed from the central regions, settlements there are examples of the application of the module.

As mentioned above, the transponder may contain different information and assign different roles to a smartphone. Here are some of the most familiar and distributed use options.

Thus, it can act as a payment instrument, user identification tools, a key for electronic locks, a bonus card, a travel ticket for any type of transport. The technology is actively used in those areas where you need a great security and confidential data transfer. And also often you can meet examples of the application of the module in the field of services and entertainment.

Principle of operation NFC.

So, Nfc that is in the phone We figured out. Let's try to find out the principle of operation of this development. Some users know that the technology can manifest themselves on passive devices, that is, it does not necessarily require a connection to an active power source.

This is due to the fact that the basis of the work of the technology is the electromagnetic induction. That is, the reader transmitter at a frequency of 13.56 MHz on a permanent basis radiates the signal sinusoid. The sensor is also equipped with an antenna and when the distance between the two elements becomes sufficient for the operation of the technology, the magnetic field is created alternating current In the coil of the reading item. After that, the current occurs in the second coil, the meager charge is enough to work NFC, so that it does not require an additional power source.

Modern smartphones Antenna NFC contain under back cover. And its location, as mentioned earlier, was marked by a special icon. This location is very convenient, as the antenna, located more deeply, can make it difficult to make the data exchange process.

What is the advantage of NFC in front of other wireless communication modules

Active users of smartphones know that the gadget is equipped with several technologies at once. wireless transmission Data, so why still need one if there are already others. This is, of course, familiar and familiar Bluetooth and.

However, NFC has a lot of advantages over its fellows, which mainly ensure the security of data transfer and the absence of the ability to intercept information.

First of all it is the shortest connection time. For one tenth of a second, a complete exchange of data occurs.
A limited range of action makes the data transfer method more protected. Technology, according to developers, acts within a radius of 10 centimeters, in practice it is significantly reduced.

The data transfer rate is much less than Bluetooth, however, it does not spoil the overall impression of the development. In general, NFC is very reliable and the necessary technology of transfer, it is in those directions where it has found application.

To find out if the smartphone supports this technology, you can search for the appropriate inscription (NEAR Field Communication) on the Gadget Battery or the branded logo on the rear panel of the device. The module is necessarily present in the smartphone settings, it can be activated or, on the contrary, turn off. In addition, you can refine information in the accompanying documents to the phone. To use the technology, you will need to download additional applications, for example, for the use of a smartphone as payment remedy Need Google Pay. or Apple Pay.

Despite the fact that there is almost everyone access to information, not every user of mobile devices knows what NFC is in the smartphone, for which the necessary this technology and how to use it.

How NFC works

NFC - saving glory computer technologyallowing you to make purchases in stores, and pay for services without money (cash) and bank card. This is a new and practically safe way of contactless payment. The communication interface is used in the smartphone. To pay a fairly smartphone with the installed module to bring to the terminal.

The principle of operation of the NFC module in the smartphone is the same as in plastic cards with the function of a wireless communication.

There are some famous methods Use the NFC interface in a mobile device. Most often, people apply it to make contactless payments. TO mobile device The bank card is attached. Capture the bank card data is difficult due to the small radius of the action of this module. More dangerous in this case left unattended, lost or unlocked smartphones.

The payment transaction is carried out in several stages:

Acquisition and activation of a map with PayPass technology.
Installing the application of your Issuer Bank.
Activation of NFC technology on a mobile device.
Applying a card to your smartphone, start the data reading procedure.
Getting from the bank in an SMS PIN code to perform operations.
Payment of goods and services with a smartphone and payment terminal.

There is another, less common way to operate NFC technology. Using the module, you can exchange data. Files are transmitted from one mobile device to another, and as an intermediary acts special application Android Beam. But it is inconvenient to exchange data in this way, since the transfer rate is low and the minimum radius. The method is suitable for transmitting text messages, but no more.

Third way to use technology - recording and reading tags. The label is fixed certain actions, such as sending a message, call a contact or Internet access. The function will suit people striving for the optimization of personal time and the automation of life.

How to configure NFC for contactless payment by phone

The NFC setting consists of the following actions:

Activation of the module. The user enters the "Wireless Network" settings section and sets checkbox opposite NFC names.
Select agent. The user has the opportunity to choose and install the application bank-issuer of its card for data transmission.
Binding the module. The user brings the device to the map with PAYPASS technology until the signal works.
The confirmation. Obtaining an SMS code to perform operations.
Using. Payment of goods and services in terminals with NFS technology.

Can I buy a separate NFC phone module

Purchase a separate contactless communication module for the phone is possible in the form of several solutions. Together with the mobile device, you can use a special SIM card or antenna. The SIM card works the same as its counterparts. It is produced mobile operators and installed in a smartphone into a special connector. SIM card opens all contactless transaction capabilities using mobile phone At the level of Apple Pay or Samsung Pay.

NFC antenna - Radio device that performs the functions of the NFC module, but to install it on its smartphone will have to be used independently. The antenna is glued to the SIM card and is installed under the lid of the phone. On the models with a non-removable lid modules are harder, but theoretically possible.

What is NFC Tags

Recording and subsequent reading tags are necessary to automate everyday tasks. Tags - this is an analogue of QR format codes. Approaching the label, the smartphone reads it using the NFC module, and performs encrypted tasks. For example, opens a roller on YouTube, email, SMS message or contact contact from the address book phone.

Smart Ring or Bracelet with NFC function - new development from Chinese engineers, suitable for smartphones operating on any operating systems. The bracelet can be selected for any size of the hand (the same with the ring). Weighs the device quite a bit and fully supports NFC technology. The functions of the processor, for example, in the Band 3 model NFC performs a special chipset. Thanks to the chipset, the smart bracelet helps the smartphone to exchange data over the contactless channel, while maintaining the necessary safety. Data on the device can overwrite hundreds of thousands of times.

The bracelet stores payment details, notes and other personal information. You can view information easily - it is enough to bring the bracelet to the smartphone screen. The bracelet instantly establishes a connection to the phone and remove the lock from the screen, as well as can perform the "hot" button. For example, when applying for a bracelet to a smartphone, a camera, the Internet or an application of the social network will instantly open.

How to find out if NFC

The NFC icon, if this module is in the smartphone, can be found in the settings menu. In the device Android for this you need:

Open the menu "Tinstures".
Open the section "Wireless Networks".
Read the list of networks that are supported by the device. If there is no network in the list, called NFC, then the smartphone cannot communicate according to this technology.

NFC technology safe? Money will not steal?

People who have long used non-contact bank cards, do not need to explain what NFC technology is. This payment method is safer standard method Activation of PIN cards in the terminal, since no one sees the code. Even after the theft of the smartphone, the attacker will not be able to remove more than 1000 rubles from the card because of everywhere existing restrictions On the limit of sums in contactless operations.

In some media, information appeared that the attackers developed terminals that are used in the crowds, imperceptibly writing money. But this is possible only if the smartphone is not blocked.

Tip: If the money by the fraudster still managed to write off illegally, the account owner can always contact the bank and ask for employees to track the movement of funds. The attacker's expense will quickly find and return the money to the owner, if he (fraudster) has not spent them yet.

Programs for creating NFC tags

There are many separate applications for creating NFC-labels, but their number is constantly growing. The following specialized programs are enjoyed in great demand:

ABA NFC. The program creates standard marks for various purposes.
WiFi Tap. The program quickly connects the device to the wireless network without entering the password.