How to find out if there is an nfc chip. What is an NFC module in a phone and how contactless payment works

Wireless Fidelity, also known as Wi-Fi, is far from the only wireless technology supported by today's mobile devices. To transfer data to short distances, in particular, for the exchange of files between phones today, Bluetooth is usually used - a specification for wireless networks that allows you to establish communication between devices on physical level. However, there are other technologies that are still less in demand in everyday life, but are rapidly gaining popularity, such as, for example, NFC, which will be discussed in this article.

What is NFC and what is this technology for?

So, what is NFC for, where is it used and how to use it? NFC or Near Field Communication is a technology wireless transmission data for the exchange of data between electronic devices located at a small (up to 10 cm) distance from each other. Currently, NFC is used in industrial and banking, medicine and science. Examples of the use of technology can be found in Everyday life, for example, paying for goods and services using a supporting NFC smartphone a, which in this case plays the role of a bank payment card.

More details about the use of Near Field Communication in different areas will be discussed below, we will also find out what NFC is in a smartphone, and now let me say a few words about how it works. Data exchange between technology-enabled devices is carried out using NFC modules, which are electromagnetic coils. Being paired, the coils alternately generate an electromagnetic field, under the influence of which a current arises in them, which is then converted into a transmitting signal.

However, it should not be assumed that the exchange is always carried out directly. If you start using NFC to transfer files from smartphone to smartphone, they will be transferred via Bluetooth or Wi-Fi, while NFC will only serve to identify devices. You should also distinguish between active and passive modes of NFC. Active is the mode in which the electromagnetic field is generated by both devices, passive - only when the field is created by one of the devices. An example of the second mode is writing or reading data from NFC or RFID tags.

How to find out if your phone has NFC

Near Field Communication technology is supported by many different types of devices, including mobile phones. NFC in the phone is hardware component, which is responsible for pairing with other NFC devices. It is usually located on the inside of the back cover, but if the battery is non-removable, its location is often marked with a logo on the case itself.

There are several ways to check if your smartphone supports NFC. Some mobile phone manufacturers, such as Sony, label their products with an appropriate NFC logo or sticker, others, such as Samsung, put "Near Field Communication" on the battery. You can also look for mention of NFC in the documentation that came with your phone.

There are sites dedicated to the subject that provide information on which phones have NFC, for example, on the page nfc-ukraine.com/article/2013/06/29/1-0 there is a table with several hundred NFC-enabled devices. Finally, what is most correct is to open the settings, go to the " Wireless networks”, select “More” and see if there are NFC and Android Beam items.

What you can do with NFC

So, what is NFC is more or less clear, let's move on to examples of its specific use. The scope of this wireless communication technology is quite extensive. So, NFC is used:

• When paying for goods and services (emulation of payment cards).
• When identifying a person (electronic documents).
• When transferring data from device to device.
• To access private data (as an electronic key).
• When reading information from NFC tags.
• To transfer money from phone to phone.
• When interacting with "smart" household appliances etc.

How to use NFC on your phone? Making sure that NFC function available on the device, it must first be activated, for which in the settings you need to check the box in the NFC item "Allow data exchange when combining a tablet (phone) with another device." In this case, the Android Beam option should be automatically activated. If it doesn't, turn it on manually by clicking on it and selecting Yes.

Let's consider the simplest example of using a function - to transfer data. After turning on NFC and unlocking both devices, open the content on your phone that you want to transfer, and then bring the devices closer with their back covers (up to 10 cm away). Once the devices have found each other, the sender gadget will display a “Tap to transfer data” notification. Tap on the display and wait for the transfer to complete, about which you will be notified by a sound signal.

Similarly, with the mediation of NFC, you can exchange links to web pages, applications in Google Play and videos from YouTube.

Using NFC to pay for goods and services is a bit more complicated. The NFC module itself is useless here, for this you will definitely need a physical or virtual bank card and the corresponding application. You should also ask if the bank you are using supports NFC. If so, find out if the banking client application has an NFC connection option, how to connect it correctly, and what types of cards are supported.

There are also third party applications supporting technology and working with bank cards. In Russia, these are Qiwi and Wallet from the developer CardsMobile. Among the banking applications in Russia, Alfa-Touch from Alfa-Bank can be noted, in Ukraine - Privat24 from Privat-Bank.

NFC tags deserve no less attention. These devices are small, portable, low-capacity storage media that are attached to surfaces or built into various devices and items such as: key chains, business cards, posters, stickers, posters, billboards, shelves with goods and so on. They serve for the same purposes as barcodes and QR codes, that is, for reading certain data from them. NFC tags can contain both simple information (phone numbers, addresses, identification codes, etc.) and various commands, for example, a command to send an SMS, distribution of Wi-Fi, turn on a device, launch applications.

To work with NFC tags, you will also need the appropriate applications. Thus, the Yandex.Metro application can be used to obtain information about the number of remaining trips on the Metro card, and AnyTAG NFC Launcher or NFC Actions can be used to program your own tags and manage various functions and devices with their help.

Scanning an NFC tag is performed as follows. After activating NFC on your phone and opening the scanner application, place the gadget over the tag at a distance of 1-10 cm. The phone will scan the tag and offer to open its contents.

Conclusion

Now you know in general terms what NFC means and where this technology is used. In the post-Soviet countries, Near Field Communication, however, has not yet become widespread due to the relatively small number of communication devices that support it. Nevertheless, the NFC function is very promising and will certainly become one of the most requested in the very near future.

NFC in the phone is a wireless communication technology High Quality with a small radius of influence, which allows you to exchange information between two gadgets without contact. NFC is based on RFID, which is radio frequency recognition, which is a method of mechanical identification of an object.

What is "NFC"?

NFC is a contactless technology that can read and send information from devices over short distances. The abbreviation stands for "Near Fild Communication". It is based on the principle of radio signal exchange, identical to Bluetooth, but there is a significant difference. Bluetooth transmits data over long distances, several hundred meters, and NFC requires no more than 10 centimeters. This technology was developed as an extension for contactless cards, but it quickly gained popularity, and developers found it used in other devices.

Three ways have been developed to use this technology in cellular:

• reading mode;
• emulation when the device works as a payment card or pass;
• P2P mode when information is exchanged between phones.

The chip is stored in a cell phone and used as a means of payment, you can book tickets, pay for parking a car or travel on the subway, and provide access control. Thanks to technological processes payments without contact, MasterCard PayPass and Visa PayWave cards with integrated antennas appeared, where the role of NFC is taken into account, applications for android smartphones have been developed.

What is NFC in a smartphone - in close contact, a pair of devices communicate by induction of a magnetic field, when closely contacting loop antennas form an educator. Under the influence of NFC, frequencies in the spectrum of 13.56 megahertz are allocated, and the information transfer rate can reach 400 kilobits per second. The device operates in two modes:

1. Active. Both gadgets are provided with a power source and transmit information in turn.
2. Passive. The power of the field of one of the devices is used.

Which phones have NFC?

NFC in the phone gives a chance to pay for purchases by touching the mobile phone to the terminal, this is a kind of bank card in a cell phone. Even 6 years ago, there were few devices that supported NFC, and now tablets, watches and other devices are equipped with chips. Which phones have this device:

• Apple - all iPhone models;
• Sony- Xperia series S, L, Z;
• Samsung – Galaxy S series;
• Motorola;
• Nokia Lumia.

How do I know if my phone supports NFC?

How to check if NFC is available in the phone? There are several ways:

1. Remove the back cover of the smartphone and inspect the battery, it should have the inscription "NFC".
2. In the settings, find the "Wireless networks" tab, click on "More", if the technology is available, a line with the name of the technology will appear.
3. Swipe your hand across the screen, open the notification curtain, where this option will be written.

If there is no NFC, what should I do?

NFC in the phone - what are these modules? There are such main types:

• sim cards;
• external devices;
• microcircuits;
• NFC modules;
• stickers.

The NFC-module can be bought together with phones, but they are also sold separately. Stickers are attached to the cell body, they are of two types:

1. Active. Provides Wi-Fi/Bluetooth connectivity but consumes a lot of power and requires frequent recharging.
2. Passive. They do not exchange information with the phone and do not write it to the device through the mobile communication channels.

How to install an NFC chip in a phone?

If it is not initially in the device, the NFC module for the phone can be purchased and installed. There are two options to choose from:

1. NFC-sim card, they are now sold by many mobile operators.
2. NFC antenna. If there is no near field, this is the best way out. Communication stores also have such devices, they are glued to the SIM card, under the cover of the mobile phone. But there is one minus: if the back cover is not removed or the hole for the SIM card is on the side, you will not be able to install such an antenna

How to enable NFC?

A device with NFC can be not only a wallet, travel and discount coupon, special tags also help to read data about goods in stores, about any objects in museums and galleries. How does it turn on?

1. In the settings, select "Wireless networks", then - "More".
2. The desired inscription will appear, check the box "Activate".

If your smartphone has an NFC chip, you need to activate Android Beam:

1. In the settings, click the "Advanced" tab.

Click on the NFC switch, the android function will be activated automatically. If this does not happen, you need to click on the "Android Beam" tab and select "enable".

1. In order for the data exchange to go smoothly, you need to make sure that both phones support NFC and Android Beam, first you need to activate them. The following is the action plan:
2. Select a file to transfer.
3. Press the back covers of the phones together.
4. Keep devices up to sound signal, which will confirm that the exchange has ended.

Regardless of the type of file, NFC technology assumes such an information transfer algorithm:

1. Hold the devices only with the reverse side to one another.
2. Wait until they find each other.
3. Confirm the data transfer request.
4. Wait for a message that the process has completed.

NFC technology is based on the principle of short-range wireless high-frequency communication. It allows the volume of data between devices with the highest level of security. This was the main reason for the appearance of NFC chips in phones. So that you can choose the right device, we have compiled a rating of 2018-2019, which includes smartphones with NFC support in different price categories.

Budget phones with NFC

Price: 11 670 rubles

Opens the rating of cheap phones with NFC - samsung galaxy J4+ (2018). This is one of the few successful models companies in 2018. If we talk about its merits, then I immediately want to mention a screen with a diagonal of 6 inches and a resolution of 1480 by 720 pixels. Despite the fact that the matrix was made using IPS technology, and not AMOLED, it gives the user a detailed picture with a high level of contrast and rich colors.

The features of the smartphone include the presence of face unlock. This technology is gradually replacing the fingerprint scanner, and the fact that it can be found in a solution for such a price cannot but rejoice. It works clearly, although in a dark room the face of the owner of the front camera may not be recognized. The Samsung Galaxy J4+ (2018) has no critical cons. The only thing that can upset is too large screen frames that spoil appearance gadget and make it look like a phone worth up to 10,000 rubles.

Samsung Galaxy J4+ (2018) 3/32GB

Sony Xperia L2

Price: 12 350 rubles

One step away from victory in the top of inexpensive phones with an NFC chip, the model stopped Sony Xperia L2. In addition to the signature angular design for which they are known Sony smartphones, it offers its user a 5.5-inch screen with a resolution of 1280 by 720 pixels. Despite such a low resolution for 2018, the image on the display is quite juicy and bright, and the colors are saturated. In terms of compactness, the gadget significantly outperforms most modern "shovels". Dimensions Sony Xperia L2 - 78x150x9.8 mm

Processor stuffing entry level MediaTek MT6737T and 3 GB of RAM copes with all daily tasks, but it does not have a margin for the future. The main disadvantage of the model is its autonomy. This is a little strange, since a 3300 mAh battery should be enough to support simple hardware and a low-resolution screen without any problems. However, in reality it is hardly enough for a day of active use. Despite this, if you like compact phones with NFC, then the Sony Xperia L2 is what you need.

Huawei P Smart 32GB

Price: 12 530 rubles

Huawei P Smart is the best budget phone with NFC. The gadget was equipped with a bright 5.65-inch display with a resolution of 2160 by 1080 pixels. Due to the fact that it has a natural color reproduction, the picture pleases with its quality in any work scenarios, from everyday use to watching videos and playing games. At the same time, thanks to a good filling from the Kirin 659 processor and 3 GB of RAM, you can play absolutely any projects, but in particularly demanding ones, such as PUBG and Fortnite, you will have to lower the settings.

Strong Huawei P Smart and its speaker. Even at maximum volume, when playing music, you will be pleasantly surprised by the sound quality. Connecting to a smartphone quality headset, even spoiled audiophiles will be satisfied. There were some drawbacks, but for their price they are not so critical - the lack of Wi-Fi 5 GHz and a slippery case.

Huawei P Smart 32GB

Middle price segment

Huawei P20 Lite

Price: 16 390 rubles

Huawei P20 Lite is a real find in terms of wireless interfaces. Not only is there an NFC module, but Wi-Fi supports a / b / g / n and even ac standards, while it is still capable of operating in two frequency bands - 2.5 and 5 GHz. If only a small number of consumers appreciate it, then the 5.84-inch display with a resolution of 2280 by 1080 pixels will appeal to everyone. It pleases with natural color reproduction and bright colors.

Huawei P20 Lite is equipped with face unlock, while the developer has not abandoned the fingerprint scanner. Apparently for those who new technology will not be to your taste. Considering that both scanners work perfectly, choosing the best one is quite difficult. The advantages of the model include a rich set of functions, which is presented in the interface of the proprietary firmware. Among them there is even an opportunity to hide bangs. The disadvantages of the model include the sensitivity of the case to damage, as well as lack of USB 3.0. Despite this, if NFC communication is important to you, then the Huawei P20 Lite is definitely worth your attention.

Yandex.Phone

Price: 17 990 rubles

Yandex.Telephone is a smartphone with which our IT developer decided to make his debut in the corresponding market. However, the device turned out to be ambiguous and the launch cannot be called successful. The main advantage of the gadget lies in its shell from Yandex, namely in the voice assistant Alice. It works even when the phone is in a locked state, while using it you can set an alarm or find the nearest cafe. The 5.65-inch display with a resolution of 2160 by 1080 pixels turned out to be quite good. It has excellent detail and rich colors.

The disadvantages of the smartphone are the weak hardware component and autonomy. So, the Snapdragon 630 processor is already noticeably outdated and is only enough for simple games and everyday processes, and the 3050 mAh battery barely lives all day. However, these disadvantages cannot be compared with the work of cameras. Not only does the second module not perform any of the usual functions here, but when shooting, the image is replete with blurry frames and insufficient dynamic range. Considering all this, many Chinese phones with NFC, they look preferable to Yandex.Phone, but the firmware features allow the device to take second place in the ranking of smartphones up to 20,000 rubles at the beginning of 2019.

Smartphone Yandex.Phone

Honor 8X

Price: 16 990 rubles

In the ranking, which presents smartphones with the presence of NFC mid-range chip, Honor 8X is in the lead. The gadget has a memorable appearance - back panel Made of 15-layer glass, thanks to which the smartphone stands out from most of its competitors. The device is based on the Kirin 710 processor. This is not the top-end chipset in Qualcomm's arsenal, but its performance is enough for stable work in instant messengers and browsers.

On the front is a 6.5-inch display with a resolution of 2340 x 1080 pixels. It not only occupies 91% of the entire front of the smartphone, but is also able to please the owner with an image with rich and bright colors, as well as a high level of detail. True, it also has a minus, which is an insufficient supply of brightness. Because of this, using a smartphone in the sun is quite problematic.

The best flagships with NFC

Xiaomi Mi8

Price: 24 990 rubles

If we talk about best smartphones with an NFC module, then one cannot fail to mention Xiaomi Mi8. The gadget is equipped with a 6.21-inch AMOLED display with a resolution of 2248 by 1080 pixels. All the features of the matrix are on the face here - natural color reproduction, maximum viewing angles and high image detail. Pleased with the presence of the Snapdragon 845 processor, which is the most powerful on the market in this moment.

Xiaomi Mi8 is good in terms of cameras, the back turned out especially well. It is represented by two modules of 12 MP. Due to the presence of optical stabilization, optical zoom 2X and an aperture value of F / 1.8, the pictures are obtained with the correct color balance and are quite sharp. If it seems to you that the colors in the photos are not saturated enough, then you can always turn on the intelligent shooting mode, which will fix this. The disadvantages of the model include only the similarity in design with the iPhone X, as well as the lack of a 3.5-mm headphone jack.

Samsung Galaxy S9

Price: 37 770 rubles

The flagship of a well-known company will appeal not only to fans of the NFC module, but also to those who appreciate the photo capabilities of a smartphone. Main samsung camera Galaxy S9 is represented by a single sensor with a resolution of 12 MP and an aperture of F / 1.5. It is also equipped with optical stabilization, which together leads to the fact that the pictures on it are juicy and detailed, so you can safely take the Samsung Galaxy S9 with you on vacation and then enjoy the footage.

Exynos 9810 is a processor that will give you amazing performance. With it, you will not encounter any problems either when solving everyday tasks or when launching games - even in PUBG you can safely set the maximum graphic settings. The model has disadvantages, though they are not too significant. So, the body of the gadget is not resistant to scratches, and the 3000 mAh battery is hardly enough for a day. If you use your smartphone actively, then, most likely, by the middle of the day you will have to look for an outlet.

Samsung Galaxy S

Apple iPhone XS Max

Price: 85 990 rubles

If you like premium smartphones with an NFC chip, then the most the best option will become for you Apple iPhone XS Max. The top representative of the latest generation of iPhones is equipped with powerful processor Apple A12 Bionic. At the moment, there is no such work scenario in which he would use his full potential. Apparently, in the next couple of years the situation will not change and you will be able to run all games on maximum settings. You will enjoy them on a 6.5-inch display with a resolution of 2688 by 1542 pixels. Its matrix is ​​made using AMOLED technology, and therefore the viewing angles here are maximum, and the color reproduction is natural. All this is complemented by rich colors and high level contrast.

For lovers of photography, Apple iPhone XS Max was equipped with a dual camera with a resolution of 12 MP for each sensor. The rear camera has rich functionality - optical stabilization, optical double zoom and a set of intelligent scene detection. Thanks to all this, the Apple iPhone XS Max is able to capture any moment of your life with high quality. The disadvantages of the model include the lack of an adapter from 3.5mm to Lightning and native charging with a power of 1 ampere.

Apple iPhone XS Max

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Recently, you can increasingly hear the mention of a certain NFC technology in the context of electronic payments via smartphone. Many use it without knowing either the name or the principle of operation. There are a lot of rumors around NFC that affect the security of personal data, money, and sometimes health. It is to explain these questions that this article was written.

NFC in the phone - what it is, how it works and where it is used

Deciphering the abbreviation NFC is literally translated into Russian as "near contactless communication." From the name, one can immediately conclude that one of the main features of NFC is that data is transmitted at a very close distance, up to 10 cm. Of course, nothing prevents the exchange of information at a distance of several centimeters via Bluetooth or Wi-Fi, but here it is worth understanding the details .

The principle of operation of NFC is based on the phenomenon of magnetic field induction, through which a short-range high-frequency data transmission between two devices at a frequency of 13.56 MHz is realized.

One reason for the existence of this technology is the need for security. It is logical that it is physically difficult to “hack” a contact that occurs in a small area, unlike other wireless connections. But what is the use of such technology if it cannot be used to communicate with a device even ten meters away? It's simple: NFC has a completely different focus. From the obvious - contactless payment by bringing the smartphone to the terminal. But this is far from the only area in which NFS can be used.

Examples of using the NFC chip:

1. Transfer media files, contacts or settings between smartphones.
2. Cashless payment. Perhaps the most popular use of the system, which is widely used in Russia. There are also various options: paying for travel, providing personal data by touch, etc.
3. Reading information. NFC tags in smart cards and other objects allow you to instantly enter information into your smartphone, for example, from business card. NFC chips are small enough to be embedded in almost any item.
4. Some Sony TVs have a function one touch Mirroring, which allows you to display video from the phone's memory on the TV screen.
5. Access control to various services or objects where a device with an NFC chip is used instead of a key.

The first phone equipped with NFC appeared back in 2006 (Nokia 6131), but such devices have become widespread only in recent years, and now NFC can be found not only in flagships, but also in models of the middle price segment, and even budget smartphones.

Benefits of NFC

• Instant connection. NFC allows devices to connect without additional manipulations, entering settings and other things, it is enough to bring two gadgets with NFC chips to each other.
• Safety. As already mentioned, the short range greatly complicates the process of hacking, but this does not mean that NFC does not have other means of protection. In addition, having lost a bank card, the risk of losing money on it is much higher than in the case of losing a phone, where funds are protected not only by a password, but also by the need to confirm access to the gadget itself.
• Ease of use. You can add several bank cards to the memory of your smartphone at once and pay with them from one device, in addition, NFC works not only with bank cards, but also with transport and discount cards.

Which devices support NFC

Most modern smartphones support this technology, but older or very low-end solutions may not have it. Some manufacturers put the name of the technology on the surface of the device case, but there are more effective way check if it is in your smartphone:

1. Open the device settings menu.
2. Go to "Wireless Networks" or "Connected Devices".
3. Open More.
4. Find the NFC item.

And of course, you can always just google the name of your smartphone by adding NFC next to it, and everything will become clear.

How to pay by phone

Here the most popular way using NFC - card emulation. Using emulation, you can create a virtual duplicate of the card and pay from your phone, as if from MasterCard PayPass or Visa Paywave cards, which are simply applied to the terminal to debit funds.

Smartphones with NFC-chip running OC Android make contactless payment using the app Android Pay, which can be downloaded at Play market at the following link. Samsung phones work with proprietary Samsung app Pay, which is usually preinstalled in operating system from the box. The principle of operation of both applications is completely identical.

A user who has never used a device unlock with a password, gesture or fingerprint will be forced to establish secure access to the device when launching Android Pay for the first time. This is a prerequisite for using contactless payment.

How to use Android Pay:

If you have connected more than one card, then you must first select the one that will be used for payment, if it is not set by default. Transactions are confirmed at the time of unlocking the smartphone using a code, pattern or fingerprint scanner. Payments in the amount of more than a thousand rubles, at the request of the seller, may need to be confirmed by entering a PIN code from bank card in the terminal or signature.

For quick access to NFC, pin the activation icon for this function in the notification shade so as not to look for it in the wilds of settings every time you need to pay.

How to pay with a smartphone in the subway or bus? This is done in a similar way: we launch Android Pay, confirm authorization and pay for the trip by touching the smartphone to the turnstile. In the same way, you can pay for admission to museums, exhibitions and similar places, without having to stand in line for a ticket.

Sharing data and files via NFC

Android Beam (or Samsung Beam on devices from the same manufacturer) is used to transfer files from smartphone to smartphone via NFC. Let's figure out how to send files via NFC:

Similarly, you can transfer other information, such as a list of contacts, which makes life much easier when switching from an old smartphone to a new one.

Conclusion

Since most smartphones have long been equipped with an NFC module, today the basis for changing the system of electronic payments is being formed. And despite the rather high popularity of NFC as a payment method, the demand for this technology (relative to its potential) is very small. In the future, NFC may become an integral part of our lives, as smartphones themselves once did, since it is really convenient to pay with your phone.

Near field communication (NFC) (translated as: “near field communication”) is a new short-range wireless high-frequency communication technology. nfc chip< дает возможность обмениваться данными между different devices located at a distance of 10 centimeters. This technology is a simple extension of the existing contactless card standard (ISO 14443 classification) and integrates smart card and reader interface into a general device. Such an NFC device is able to communicate even with existing smart cards, as well as with readers of the ISO 14443 standard, and others. NFC devices and, may be compatible with the working infrastructure of contactless cards already in use in public transport/payment systems. NFC is aimed primarily at use in mobile devices.

What is nfc module

The module is an external device that allows for rapid identification using a radio link at a distance. The short-range communication module operates at a frequency of 13.56 MHz at speeds up to 424 kbps. This technology is based on the use of specialized chips (including telephone SIM cards) in communication devices. The widest spread of NFC technology in the near future is associated with the possibility of using it in conjunction with smartphones and mobile phones: mobile device equipped with a module (an external nfc module for a phone is suitable), which will allow the subscriber to make timely payments for services and goods by simply bringing his phone closer to the reader. It is usually understood that the funds are debited from the client's bank account, and not from the account with the mobile operator. connections.

Types of modules

The main types of nfc modules are sim cards, external devices and chips. Also, you can use additional devices for communication and payment, such as NFC modules and stickers. The nfc module for the phone can be ordered separately, or it can be purchased already in the phone as built-in equipment. Stickers are attached to the body of the phone. There are passive and active. The first ones are not able to exchange data with the phone and do not make it possible to write information to the NFC device through the communication channels of the mobile operator. Active - use the Wi-Fi / Bluetooth communication channel to communicate with the device, which leads to increased power consumption, or the need for constant recharging of the module. A common drawback of such modules is the presence of a mount.

How to add an NFC chip to a smartphone

The first option is an NFC SIM card. They are issued by many mobile operators. Install a ready-made functional card in your smartphone and pay for purchases with a light touch on the terminal. Needless to say it's a quality replacement Apple Pay it is impossible, since ongoing transactions are not encrypted and do not require fingerprint identification. In addition, the user will most likely have to open a new account with a mobile operator/bank. However, if he is the holder of a plastic card of one of the banks, the problem will disappear by itself. All you have to do is visit the salon. cellular communication, or a bank branch and get a SIM-card.

NFC antenna. Another working way. For all users whose phone or smartphone does not have a “near field” module in their arsenal, the path to “contactless” is a little more difficult. You will have to either replace the device, which is irrational, or equip it with an NFC antenna yourself. Contrary to popular belief, this is much easier to do than previously imagined. To do this, you need to purchase a special external NFC antenna. You can do this in mobile phone stores, then, by gluing it to the SIM card, install it under the cover of your mobile device.

Small remark: make this operation will not work for owners of devices with non-removable back cover and a side slot for SIM cards. You can install the module in almost all phone models. This solution is simple and will be used until phones with built-in NFC modules appear on the market.