Initially, Near Field Communication technology ( NFC) has gained maximum distribution as a technology for making contactless payments. You can use a smart card with an embedded NFC chip as a public transport ticket, as a payment card in retail establishments, as a smart business card or as a contactless key card.
However, in recent times, this technology has been increasingly used in devices such as smartphones and tablets: almost all major manufacturers have begun to equip their mid-range and high-end models with NFC adapters.
What is NFC?
If we translate the name of the Near Field Communication technology from English, we get the phrase "near field communication", which can be deciphered into ordinary language as wireless connection over short distances. Thus, we see that two NFC-enabled devices can communicate with each other when they are nearby. And indeed - the "range" of NFC is only a few centimeters.
In mobile devices, NFC technology can be used for various purposes. You can, for example, turn your phone into a virtual bank card, use it as a pass to a pool or a business. You can also quickly exchange files and links, and even, using special applications, read and write information to programmable NFC tags or NFC smart cards.
In the operating room Android system, NFC support appeared in android versions 4.0 Ice Cream Sandwich - Its built-in Beam feature allows you to share files between devices.
Why do you need NFC if you already have Bluetooth?
As you remember, NFC is most often used when paying for various goods or services, and in this case, Bluetooth is not quite suitable. Firstly, because of its large range (there is a possibility of interception of your payment data). And secondly, the connection between two NFC devices, unlike Bluetooth, occurs almost instantly.
Does your device support NFC?
Not all phones and tablets have NFC adapters. Does your tablet support NFC? How to check if it exists?
Some manufacturers, such as Samsung, place the Near Field Communication logo directly on the battery of their smartphones, while others, such as Sony, place the NFC logo on the device.
However, the easiest way to check for an NFC adapter in your phone or tablet is through its settings menu:
Go to the settings menu of your Android device
In chapter " Wireless network» Click More...
Here you should see the NFC settings items:
NFC activation
If your tablet or phone has an NFC adapter, you need to allow it to be used to exchange data between other NFC devices.
Go to Settings -> Wireless networks -> More...
Check the box "allow data exchange when combining the tablet with another device"
This will automatically turn on Android Beam.
If Android Beam doesn't turn on automatically, just tap on it and choose "Yes" to turn it on.
When Android Beam is disabled, it limits the ability to share NFC data between smartphones or tablets.
Sharing data using NFC
Once you have activated NFC, you can use it to transfer data. For successful data exchange between tablets and phones, please note the following:
Both the sending and receiving devices must have NFC enabled and Android Beam enabled.
None of the devices should be in sleep mode or have a locked screen.
When you bring two devices close enough to each other, a beep will sound to let you know that the devices have found each other.
Do not separate the devices until the data transfer is complete and you hear a successful beep.
Data transfer via NFC
Place the back panels of the devices against each other.
Wait until confirmation appears that both devices have found each other and the sender's screen shows "click to send data":
Click on the screen and the data transfer will start:
You will hear an audible confirmation, both at the beginning and at the end of the data transfer.
Application Sharing
With NFC, you cannot share APK files. Instead, the sending device passes a link to this application to the other device in Google Play Market, and the recipient opens a page in the Market with a proposal to install it.
Web page sharing
Just like in the previous case, the web page is not transferred from one device to another, but only a link to it is exchanged, which the recipient tablet or phone opens in its web browser.
Exchange youtube video
Again, when sharing a YouTube video, there is no transfer of the file itself - just a second device will open the same video on the YouTube site.
Using NFC tags.
In addition to sharing information between tablets and phones, you can use your device to read (and write) data from NFC tags and smart cards equipped with an NFC chip.
NFC chips are small enough that they can be embedded anywhere - in business cards, bracelets, product labels, stickers, price tags and other items. They can contain information about a person, a URL, information about a product, and even commands that your phone or tablet will have to execute when you tap these tags.
To read data from NFC tags (or to write information to them), you will, of course, need a special application.
For example, using the Yandex.Metro program, you can find out how many trips are left on a one-time Moscow Metro card, and the NFC App Launcher program will allow you to program your phone or tablet to perform certain actions by placing the relevant information in an NFC tag.
Conclusion
Most of the modern Android phones and tablets are already equipped with NFC adapters, but so far this function has little demand and its use is still limited, mainly by the ability to quickly exchange content and contactless payment for services. However, in the future, NFC can penetrate into all areas of our lives, sometimes even completely unexpected ones.
Let's say you found the NFC function in your phone - you don't know what it is, and you also don't know what will happen when it is activated.
In this case, the material below will be incredibly useful to you, and you will discover another dimension of its use for yours.
If you already know about NFC technology in your phone, what it is and how to use it, we will try to expand the boundaries of your knowledge.
So, let's begin.
NFC abbreviation
The mysterious figure of three Latin letters in yours is not a veiled curse at all, but an indication of the use of technology, the full name of which sounds like Near Field Communication.
It appeared relatively recently, but it was most widely used thanks to mobile technologies.
As it turned out, it is the best tool that facilitates, and in some cases speeds up the life of the user with its skillful use.
Conventionally, this abbreviation can be deciphered as "near connection". She is distant in several ways.
Firstly, the transfer of information with its help can be carried out at a minimum distance between the objects of interaction, which is no more than a couple of centimeters.
And secondly, the amount of information transmitted in the process is negligible, despite the fact that this technology is used by smart devices like .
The abbreviation NFC is related to another abbreviation EMV, the name of which is not necessary to memorize.
She, in turn, is the progenitor of the technology and describes the possibility of using smart cards for contactless transactions.
If desired, the process can be studied in more detail by looking through the standard 14443.
But bypassing theory, in order to fully appreciate the benefits of technology, let's turn to practice and find out how to use in mobile device NFC.
rice. 1 - NFC logo
Where is NFC being implemented?
Yes, indeed, NFC technology applies not only to phones, but also to other gadgets, for example, tablets can also have similar functionality, especially since the technology allows it.
The NFC transmitter / receiver takes up really little space and in some cases fits without problems between the case cover and.
You can recognize devices equipped with such a module by the corresponding logo placed on the case.
Please note: often a label with the corresponding logo directly indicates the location of the corresponding antenna, and allows you to make a connection between objects much faster
As for other objects, other everyday objects can be embedded in readers and writers.
The same technology is used when paying with travel cards in public transport, for example, in the subway.
And among household appliances modern refrigerators with smart functions stand out as the leader in the use of this technology.
The technology itself is not strongly limited by standards, therefore it has rather broad prospects for its development, and many manufacturers of equipment and new technologies actively use this.
This applies to both hardware and software developers, so every day new gadgets and applications appear that allow you to effectively use NFC.
Now let's look at how they are used.
rice. 2 - Connecting in Android system
Ways of interaction
The uniqueness of NFC technology is that it can be used in three different ways. These include:
- Data exchange.
- Reading and writing data.
- Emulation of smart cards.
The first interaction option involves the use of equivalent devices.
In the English version for such interaction is used Peer-to-Peer characteristic, which means that the data is transferred 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 striking example of such interaction can be considered the transfer of data from a smartphone to a smartphone, or from a smartphone to. The subjects of interaction in this case can be:
The second interaction option - reading and writing data can be carried out not only between devices.
Much more often it is used to create and read labels.
The peculiarity of these tags is that they are miniature hidden chips that do not consume a lot of energy.
The last interaction option is emulation.
It involves using a smartphone as a contactless payment device for services like payment cards used to pay for travel, but in a wider range thanks to services like Google Wallet.
NFC: what is it, what is it for, how does it work?
What is the nfc function in the phone? What is it used for and how can it be used in everyday life. Description of technology and features of its operation
Hidden technology flaws
Along with such advantages of NFC as low power consumption and minimal cost of implementation, this technology has a number of disadvantages that appear immediately after the start of operation.
Some of them have to be put up with in anticipation of the improvement of technology, and some of them force us to limit the scope.
So, the first of them is a small range of the signal.
This disadvantage, on the one hand, creates an inconvenience when, for example, the user needs to create a connection as quickly as possible, but on the other hand, it can also be evaluated as an advantage.
The bottom line is that in this way it is provided quite high degree security, which minimizes the chance of accidentally executing a command, for example, in the process of reading a code or a link from a sticker label.
But there are also more serious drawbacks.
Thus, the lack of clear standards leads to an uncontrolled increase in the number of technology modifications, from which the consumer himself suffers.
For example, some companies, such as Sony, are refining transmission technology, releasing their own Consumables in the form of TecTiles, compatible only with devices manufactured by them.
And this leads to the fact that the user is driven into the framework of inconvenience.
However, there is another drawback that manifests itself when trying to master the system on your own.
Certainly progress in last years has led to the fact that the use of NFC is becoming more and more popular and more and more people are asking questions like what is nfc in the phone for, what is it and what is the use of it.
NFC - use case, what is it for, where to buy?
Today I want to talk about possible scenarios for using NFC technology in everyday life. Payment systems, contactless payments are good, but in addition to use cases imposed by market leaders, NFC can also be used in your own tasks. This is my personal experience and just my thoughts on the matter. Only the idea matters. How you use it is another question.
I have an NFC enabled smartphone.
What is it and how to use it?
NFC (Near Field Communication) is a short-range (up to 10 cm) high-frequency wireless communication technology that allows contactless data exchange between devices located on short distances: e.g. between reading terminal and cell phone or plastic smart card.
NFC technology is based on RFID (Radio Frequency IDentification, radio frequency identification - a method for automatically identifying objects in which data stored in so-called transponders or RFID tags are read or written using radio signals), that is, a technology for transmitting information over a radio channel that supports both active and passive devices.
For example, Sony NFC key fobs do not require additional power to work (read data), that is, they can work completely passively.
There are three most popular uses for NFC technology in mobile phones:
- emulation of cards - the phone pretends to be a card, such as a pass or a payment card;
- reading mode - the phone reads a passive tag (Tag), for example, for interactive advertising;
- P2P mode - two phones communicate and exchange information.
The "carrier" of the NFC chip is often mobile phone- the device is as massive as it is individual, and most importantly, inseparable from its owner, acting as:
- means of payment (virtual wallet),
- a means of identifying the owner,
- key,
- bonus card
- ticket.
At present, NFC solutions are already being applied in many areas.
For example, this technology is used to book and sell electronic tickets, pay for public transport and car parking, NFC technology is also actively used in the field of services and entertainment, in the field of security and access control.
The maximum radius of action is about 10 cm.
The module operates at a frequency of: 13.56 MHz.
Data transfer rate: 106 Kbps - 848 Kbps.
What is the fundamental difference between NFC and Bluetooth technology
The most important advantage of NFC is the shorter connection time, one tenth of a second.
In addition, NFC has a shorter range, which makes this method of transmitting information more secure.
NFC allows you to transfer data at a speed of 424 Kbps, which is much less than Bluetooth.
The development of contactless payment technology has led to the emergence of such cards as Visa PayWave and MasterCard PayPass, which have a built-in antenna and work according to the NFC standard.
The development of this market has led Google, MasterCard, Citibank, Sprint and First Data to create Google service Wallet, which is installed on some Android phones.
The application allows you to turn your phone into credit card, which can be paid in any terminal that supports PayPass.
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Near Field Communication technology (or NFC for short) was initially popular only as an aid to contactless payments.
However, everything is much more extensive than it seems at first glance.
This technology provides high-quality wireless communication, which has a very small range (up to 10 cm).
This connection provides the ability to make contactless data exchange between devices that are in close proximity.
So, using a SIM card with a built-in chip of this technology, you can use it as a payment card or, for example, a key card.
NFC is based on Radio Frequency IDentification (RFID). This is the identification of radio frequencies, which works in automatic mode.
The data is stored in so-called transponders, they are defined as NFC tags. A radio signal reads and writes data.
The technology radio channel supports both active and passive devices.
So, for example, even key fobs can be adapters for NFC technology.
However, smartphones are increasingly becoming carriers of technology. Many manufacturers supplement gadgets with high-level NFC adapters.
And although many still do not know what NFC is in a smartphone and how to use it, however, the function, at times, turns out to be very handy.
What is NFC?
If we translate the full name of this technology, then literally we get “near field communication”.
In fact, this is a wireless communication that operates at a very close distance.
That is why devices with NFC adapters are able to communicate with each other, but this only works if they are nearby (no more than 10 cm apart).
This technology can be used for various purposes.
So, for example, a phone that has an NFC module can become a bank card or a pass to any establishments.
In addition, the function involves instantly exchanging files or links.
However, for this, both devices must have a special application that reads NFC tags.
Or the phone must have a SIM card with an NFC chip.
Android phones allow you to use the NFC function from version 4.0.
At the present time, devices with NFC tags are used increasingly in various fields. So, for example, with the help of an NFC adapter, it is possible to book tickets, as well as sell them.
Also, in some cities, using an NFC device, you can pay for parking or travel on public transport.
However, NFC chips are most actively used in the service sector and in the field of control and security of access to personal data.
Features of NFC in a smartphone
For smartphones, there are three most popular uses for NFC technology:
- Reading mode. This feature allows you to read passive tags.
- Card emulation. With this option, it is possible to use the phone as a card (bank or pass card).
- R2R. This is a mode that allows two phones to exchange data by pairing with each other.
The fact is that only a phone with an NFC module can become a carrier of technology. That is, the chip is built into the device.
At the same time, it is assumed that it will be inseparable from the user, since the device may have extremely convenient functions.
After all, the phone is always at hand, but the payment card may not be nearby, and then the smartphone with the module will replace it.
NFC also allows you to pay for purchases directly from virtual wallet, which is even more convenient (after all, then there is no need to cash out the wallet).
Also, the use of this function is possible to identify the owner of various bonus cards or travel tickets.
NFC tags
Labels are called certain information zones that are programmed. They are usually embedded in posters or billboards.
Also sometimes they can be found on the shelves with products in large hypermarkets.
When reading them, you can get Additional information, some links and even watch videos (for example, trailers for).
However, in addition to exchanging files and information between devices, the NFC function can be used to write and read data from various installed NFC tags, as well as SIM cards with the same chip.
The fact is that such chips are quite small in size.
This allows them to be integrated into various fixtures and devices. They can be business cards, product price tags, stickers or labels, bracelets, key rings, etc.
However, the process of working with NFC tags involves a certain algorithm of actions, which is performed through special application on a smartphone.
However, there are many such applications and each of them is responsible for certain data.
And there are also applications that allow you to program information into the tag on your smartphone.
Tag scanning
First of all, you need to enable the NFC function in your smartphone. After activating the screen.
After - you should touch the phone to the tag, but do it so that the NFC adapter in the smartphone touches the tag.
After that, the gadget automatically reads the information entered into the tag chip and automatically displays it on the screen. However, for her full view you have to click on the screen.
Music file transfer
You need to enable the NFC function on both devices and activate the screens of smartphones. Go to the file that stores media content.
Having opened the media library, you should select the desired one. When you play a track, the file will automatically be streamed to another device.
However, it is worth considering that to transfer the file, you need to turn the phones back to each other and lean them so that the NFC tags are in contact.
After pairing, the phones will vibrate, after which you need to move away from each other a little, which will prevent reconnection, which can interfere with the transfer of files.
After being transferred to the receiving phone, the media file will play automatically, and you can find it in a special application.
However, it is worth considering that if the audio is stopped on the transmitting device, the transmission will also stop.
NFC or Bluetooth?
The fact is that Bluetooth and NFC technologies are similar to each other in terms of the principle of operation. However, the difference between them is significant and quite noticeable.
So, if we talk about NFC, then the connection time of this function is one tenth of a second, which is an undeniable advantage over Bluetooth.
In addition, the short range makes NFC much more secure.
However, NFC has a much slower transfer rate than , and you will have to keep the devices close to each other (it can be compared to the infrared ports on older phones).
That is why technologies are used for different purposes.
So, for example, Bluetooth is not used to pay for goods or as a pass, since such a connection is not reliable enough and there is a possibility that payment data will be intercepted.
In addition, the practical instant connection of devices with NFC does not spend much time.
However, in the case of large file transfers, Bluetooth will be more suitable, since its data transfer speed is much higher and it does not require devices to stay as close as possible for a long time.
In addition, the development of bank payments at the present time is quite progressive, which leads to the increasing use of NFC modules.
For example, global payment systems and banking corporations create cards with embedded NFC chips.
Not so long ago, a number of companies created a special Google Wallet service, which involves installation on smartphones based on .
This application will allow the user to turn the gadget into a credit card, which can be used to pay for purchases or make payments at terminals.
However, for this, terminals must be equipped with PayPass technology, which will read NFC chips.
How can I tell if my smartphone has NFC?
The fact is that not every modern smartphone has a built-in NFC adapter. However, some do not even assume the presence of such a function on their gadget.
Some devices place the words Near Field Communication or just the NFC logo on the battery or on the body of the phone.
However, there is a way to check if your smartphone has an NFC adapter. To do this, you need to perform a number of actions:
- Go to the smartphone settings menu;
- Open "Wireless networks" and click "More ...";
- If the function is present on the phone, then you can see the NFC settings item.
Activating the NFC function
After you have decided on the support of the NFC function by the gadget, you need to allow the use of the adapter, which will allow you to exchange data with other devices that support NFC.
To activate you need:
- Go to the settings menu;
- After in the "Wireless networks" click "More ...";
- And check the box (on some devices, switch the toggle switch) on the item “allow data exchange when combining the device with other devices”;
- After that, the Android Beam function should turn on automatically, but if this does not happen, then you must click "Yes" in the window that appears, which will activate this function.
Disabling the Android Beam feature limits NFC's ability to pair and transfer data between devices.
NFC and data sharing
After activating the NFC function, it can be used for data transfer (data transfer also occurs during payments).
However, for a successful connection and data exchange, several points must be taken into account:
- Both devices must have Android Beam enabled, as well as NFC;
- Both devices must have the screen activated, while being in sleep or safe mode excluded;
- Both devices notify with a signal or vibration about a successful connection, however, for this they must be brought close to each other in the place where the NFC chip is inserted;
- It is necessary to keep the devices nearby until the transfer is completely completed, and the phone notifies you of the end of the data exchange.
Data transfer
The fact is that regardless of the data that must be transferred, the way to use the Android Beam function is unchanged.
It also does not change depending on the received and transmitted device. Its algorithm is as follows:
- open the file (content) to be transferred;
- lean the devices against each other with their back panels;
- wait for connection confirmation by means of a signal or vibration;
- click on the screen "click to transfer data";
- click on the screen to start data exchange;
- wait for the notification about the start of the transfer;
- slightly remove the devices, but do not move them more than 10 cm;
- wait sound signal at the end of the data transfer.
Application Transfer
A big plus of NFC is that it provides the ability to transfer APK files. However, everything is not so simple.
Instead of the file itself, the device sends a link to the application in Play Market. After on the recipient's device, you can easily follow the link and download the application, and not look for it all over.
Web page transfer
Just like when transferring applications, the device transfers only a link to a web page, which allows you to quickly open it on the recipient's device using a browser.
This will happen automatically after receiving the link.
YouTube video transfer
You can guess that, just like in previous times, the device will only send a link that will open automatically special program on an Android device and the video will start playing immediately.
NFC-enabled devices
The first device to support the NFC function was Nokia phone 6131 which was released in 2006. However, at that time given function was absolutely not in demand and useless due to the lack of infrastructure.
However, at this time, the NFC function has everything more devices. One of them is Sony Xperia S with dual-core processor and HD screen.
This phone is based on Android and has two NFC tags called XPERIA SmartTags.
They allow you to program the execution and launch of certain actions when the phone is in range of NFC.
More and more companies are embedding NFC chips in their own or releasing certain devices (not always smartphones) with modules. So, for example, Intel plans and is already implementing production with NFC chips.
Samsung is also increasingly adding NFC functionality to its devices.
Considering that such large companies are increasingly concerned about the availability of NFC devices for users, it can be assumed that soon this feature will appear in all smartphones, which will allow its mass use.
Important NFC Points
If we talk about what NFC is on a smartphone and how to use it, you should understand and learn a number of specific points, as well as " reverse side» application of this function.
The NFC function allows you to significantly facilitate some areas and the use of a number of everyday items that are sometimes not convenient to carry with you.
However, it should be understood that this technology also complicates some things in some way, including the issue of security.
And although, compared to the same, the NFC function is more secure, it should be understood that not everything is so simple.
Since the technology only works at close range, turning it off is useless, but constantly turning the function on and off is also not very convenient.
And so it turns out that complete security we can provide our data only after disabling the function, however, in this case, its convenience is significantly reduced and the function becomes practically useless.
The fact is that when using the NFC function as a mobile wallet, a password, pin code and other similar means of protection will not always provide complete data security.
So, for example, the loss / theft of a phone threatens that attackers can use another device with NFC, get your data, withdraw money from a mobile wallet or pay it somewhere.
Although it should be understood that the loss of a wallet can lead to approximately the same consequences. That is, the function is relatively safe. It all depends on attention and the case.
Conclusion
Many Android devices already have built-in NFC chips. However, the use of this function is still very limited and not very widespread.
Now this function is used as an opportunity for contactless payment for services, however, this application is not always and everywhere possible.
It is worth knowing that NFC technology owes its appearance to such well-known companies as Sony and Philips.
Two corporations have teamed up to create the latest radio standard. After a while, it was called Near Field Communication (NFC).
However, before that, both companies made attempts to create this kind of technology. So until 2002, both companies had developments with the names MIFARE (Philips) and FeliCa (Sony).
And although the technologies were similar, however, their compatibility was not possible due to a number of reasons.
After a while, both corporations realized their shortcomings and came to a common opinion that the combination of knowledge and resources would help achieve what they wanted, in the end it turned out to be so.
They combined all the advantages of previous developments and tried to reduce the shortcomings as much as possible. In addition, the main purpose of the development was the possibility of its application in practice.
NFC has always been focused on pairing and transferring various kinds of data between devices that are not paired with each other.
However, initially such devices were supposed to be only electronic media, and later it became clear that the use of NFC is possible in various other devices and objects.
The technology also allows instant communication with devices in close proximity, which has led to a number of different applications of this technology.
In addition, data transfer occurs immediately after connection (only in some cases additional steps are required).
This technology is implemented in the simplest and most convenient form - a chip. It works in both active and passive modes.
That is, as an active device, the device works as a pass or a key, and as a passive device, it works as a transmitter of recorded / programmed information.
And although on this moment NFC technology is used extremely passively and in very limited areas, but it can be assumed that it will not be so long before it will be widely popularized around the world.
Already now it is possible to understand that its use is possible in rather extensive areas.
So, most likely, the technology will penetrate into the most various spheres of human life, perhaps even into those that are unimaginable.
That is why smartphones with NFC will soon be on every corner, and their value will increase significantly.
Many corporations understand that the implementation of such a project will bring significant benefits in the future.
SafetyTime saving
|NFC technology - what is it, why did it appear in our lives, and do you really need a smartphone with this mysterious technology? We understand today on the page of our portal.
What is the thing and what is it eaten with?
So, let's go: NFC in the phone, what is it and how to use it? NFC is a wireless communication method, literally translated from English as "near communication" - Near field communication. This technology "came out" in 2004. (at the time of this writing, this is neither more nor less - (!); 15 years ago! However, it is safe to say that popularity came to her only 2-3 years ago.
The main scope of this technology is payments, then in popularity - reading information embedded in tags, and less often - data exchange. So, it is precisely because of the lack of payment terminals that the NFC function that supports contactless payment did not gain popularity at first.
What about today? According to a study by Alfa-Bank, in 2018, every ninth non-cash payment transaction was carried out using NFC (which is 5 times more than, for example, in 2017). Experts predict that in 2019 every sixth payment will be made using the NFC module. 👍
Plus, phones with an NFC chip at the beginning of their history were no longer cheap, and Chinese manufacturers (whose smartphones are relatively inexpensive) generally ignored the emergence of such technology in the beginning. However, over time, the situation has changed radically, every year more and more people use the technology.
We have collected for you a small statistics of sales of phones with NFC in Russia (according to the Svyaznoy company).
Advantages :
- almost instantaneous connection establishment (0.1 sec);
- relatively inexpensive cost (here, by the way, someone can argue, because according to the data for 2018, the average cost of a smartphone with NFC was neither more nor less than 27,500 rubles);
- compact size of the chip itself;
- high level security (unlike Bluetoth).
- easy setup(we will give instructions below).
Flaws:
- very low transfer rate;
- small radius of action (up to 10 centimeters), although this can be considered a plus, because this ensures the security of payments. The operation will take place only if the phone is tightly attached to the POS-terminal.
Payment by phone: setting up NFC
The NFC module in a smartphone is most often used to pay for purchases. Perhaps this is the opportunity I use every day. You do not need to take your wallet with you, remember about the card, because the phone is always with you. Setting up NFC on your phone is very easy!
Please note that the card that you plan to link to your phone must be marked Paypass, which means "contactless payment". If there is no such mark on your card, you should contact the bank to reissue the card.
Now I show you step by step how to set up NFC (nfc) for payment on your phone and link a card.
- If your phone is running Android, you must first enable the NFC function on your phone. To do this, go to "Settings" - "Wireless networks". If you have an iPhone, you can skip this step, NFC is enabled by default there.
- Iphone owners- you will need to go to the Wallet application (it is by default). If we talk about Androids, everything is the same there. For example, in Samsung immediately there is the SamsungPay application). Click on the plus in the upper right corner). By the way, I talked about it separately.
- Let's start the process of adding a map. In the form that appears, add all the card data.
- Next, click "Accept".
Contactless payment apps will definitely remind you to lock your phone with a PIN code to secure your finances.
That's all. Thinking about how to use nfc on your phone to pay in a store? Yes, nowhere is easier - you just put your phone to the payment terminal and confirm the operation with your fingerprint. True, for the first payment for the purchase by phone, I still took the card with me.
Fraud and other horror stories about NFC
Everything new is always scary and many still do not use contactless payments. consider this method unsafe. But let's think together - is it much safer to carry money in your pocket or a card? Of course not, just more familiar!
Even if sadness happens and the phone is stolen, it will not be possible to make a payment without you. After all, to make any payment via NFC, you need a fingerprint (Touch ID) or a face scan (Face ID). Yes! I also heard stories about a severed finger, but these are “tales” - nothing more :). I have not found a single confirmed case at the time of writing.
But if a card with a contactless payment function is stolen, the risk of losing money is higher, but it is limited to 1000 rubles. It is this limit of transactions that do not require a PIN code that is set in Russia. This is what scammers use in crowded places. The principle can be understood from the photo below. But again, the theft will be up to 1000 at a time. 
NFC for data transfer
In addition to the possibility of payment, the NFC chip in the smartphone also allows you to transfer data. The opportunities for transmission are, of course, small. You can only transfer small files, links, in general, everything that you usually send via the Internet or, in extreme cases, Bluetooth. Moreover, as I wrote above, to transfer using NFC, you need to attach the phones very close to each other. In addition, you still need to install the application.
NFC differs from Bluetooth in several ways:
- Connecting via NFC is almost instantaneous. It is for this reason that technology is used to emulate bank card;
- Very, very small range. As we have already said, this is both a plus (provides more security), but also a minus - it may not always be convenient.
- The NFC sensor may be active even if the main device is turned off.
To be honest, I have never used NFC to transfer any files or information, although the NFC module is present in my smartphone, I just don’t understand why it is needed, if there is Mobile Internet, Wi-Fi, but this is my subjective opinion.
Reading information using NFC
Another of the areas of application of this technology, which, by the way, is gaining momentum, but so far seems to be a distant future - NFC tags. They can encrypt absolutely any information, and be considered by any device with an NFC module. This is something like a QR code that is scanned by a mobile camera and then information appears on your phone that was included in this code. (I wrote more about and even how to create them separately)
The NFC tag is a very tiny chip. It is due to its compact size that it can be placed anywhere, even implanted into the human body, and such cases already exist.
Today, there are about 50,000 people worldwide who implanted NFC tags. Someone can not think if he took the keys to the house or his garage. There are also those who encrypt the data of their work pass, passport or medical card into the label. Imagine: I drove up to the barrier, put my hand - it opened. No need to look for anything, your hand is always there). In Russia, for example, there is a man who implanted an NFC chip from a Troika card in his hand. Now he will definitely not lose her and will not forget her at home. Convenience or fantasy? Call it what you want, but this is today's reality. More information about in our other article.
Another way is to go through the "Settings" section. There should be at least some mention of NFC, for example, in the "Wireless Networks" section.
If you have not found anything like this, then so far this technology has bypassed you.
The NFS module for the phone is installed in the model of the middle and high price segment. For example, in the latest generations of Galaxy and iPhone (starting with), the creators have been adding this feature for several years. However, in most countries, the use of tags is rather poorly developed.
Where is the chip located in a mobile device?
The NFC module in the phone is placed under its back cover, near the battery. It is with this part that it is more logical to attach the phone to another device.
What gadgets are equipped with an NFC module?
Well, of course, first of all, these are smartphones, and now they are being put in more budget models and in models from Chinese manufacturers. You can find a list of smartphones with NFC support.
A very handy thing is a watch with NFC. Well, imagine, standing in the store, you do not even need to look for money, or a card, or a phone - after all, the watch is always on hand. I don't think it's more convenient! The probability of theft of such a device is small, and, by the way, even if the watch is removed from the hand, it will no longer be possible to pay with it.
Fitness bracelets with NFC technology are also gaining popularity. Such a gadget on Yandex.Market costs from 2500-15000 rubles.
An NFC ring is a less familiar thing for me and I didn’t have the opportunity to test such a gadget live. To be honest, it's embarrassing that it's very easy to lose him. If someone has experience using it, please share it with us in the comments.
In conclusion, I want to say once again to those who are interested in this technology: The NFC function in the phone, in the watch, in the bracelet, and anywhere - it's really very convenient, simple and safe! I hope that my material was useful to you.
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