What is NFC and how does it work?
Have you ever heard about NFC What is NFC When it comes to online payment, talk about NFC is absolutely necessary. Yes, I’m talking about the same NFC in friends, which is used in systems like Samsung Pay and Android Pay. This feature was often used in high-end devices but it is also available in mid-range. Perhaps you will have heard this acronym too but do you know what is it, how it works and where it is used.
Perhaps you have used NFC as you can see it nowadays in almost all the new smartphones. But even after using it there are very few people who have complete knowledge about it. Even though hearing it sounds a little scary but in reality, it is very easy to understand and it is also a great thing to do. Whereas it was only a few expensive phones in Mehsud, it has begun to become more and more in today’s smartphone. So today I thought why you should be given full information about what NFC is all about so that people get information about this technology and you are easy to understand and use it better. So let’s begin without delay and know what happens to this NFC and how it works in smartphones.
What is NFC?
What does NFC mean? The full form of NFC is ” Near Field Communication “. And as its name suggests, through this, short-range communication can be between any two compatible devices. It uses RF signals for communication. This communication requires at least one transmitting device to complete, and there is a receiving device to receive the signal. As we have already known that NFC means Near Field Communication If its main purpose is seen, its main application is used to interact around your phone.
It operates radius only close to 4 cm and provides a wireless connection between your device and the other. This technology allows two-way communication, where you can send and receive information on both devices. This NFC connection does not depend on any technologies such as Wi-Fi, 3G, LTE or any other, and you do not even have to pay any money to use it.
NFC is born from RFID. RFID, or radio-frequency identification, is a technology used in shipping companies, in large warehouses, and to track goods in superstores. It uses electromagnetic induction to transmit information in a short space, just by scanning a container, it is known what is in it.
NFC is also a similar technology, but it has been standardised for consumer smartphones. NFC standards have been defined by a group called NFC Forum, and there are big companies like Nokia, Sony and Philips. If you have a feature of NFC in your phone then you can use it to transfer data between phones and NFC readers.
Near Field Communication Technology Overview
NFC has been developed by Sony, Nokia and Philips, which has also been integrated with so many forum monitors and this only regulates this NFC standard. Near field communication always operates in low power and low-frequency range.
Frequency: 13.56 MHz
Range : 0 to 10 CM
Specification: ISO / IEC 14443 ( which is for smart cards that store information ) and ISO / IEC 18000-3 ( which is used in the smart device’s RFID tags )
Types of NFC
NFCs are mainly of two types.
- Active NFC Device
- Passive NFC Device
1. Active NFC Device
Active NFC devices are called devices that can also send and receive data and also communicate with each other, whether it is an active device or Passive device. Active NFC device needs a power source to work. They have the ability to process information. For example, Smartphones are the most common form of an active NFC device. Apart from this, public transport card readers and touch payment terminals are also the best example of this technology.
2. Passive NFC Device
Passive NFC devices are those devices which are the only other NFC devices that can send information. They do not need any external power source for their operation. Apart from this, they also do not have the ability to process information. They can not even be connected with other passive components. For example, they are used in tags and other small transmitters, which are used as interactive signs in walls or in advertisements.
Working Principle of NFC
So far, we have come to know that what is NFC? But they do not know how it works after all. Like Bluetooth and WiFi and other wireless signals, NFC also sends its data through radio waves. Near Field Communication is a different standard for wireless data transitions. This means that the devices must adhere to certain specifications to communicate with each other. The technology used in NFC is derived from the ideas of older RFID ( Radio-frequency identification ), which used to first electromagnetic induction to transmit information.
From this, one finds the difference between NFC and Bluetooth / WiFi and points out that NFC is used to induce an electric current in passive components and to send data. Which suggests that there is no need for power supply to operate a passive device. They get power when an active NFC component passes near them or comes within their range, then the automatic electromagnetic field is produced which generates power. But sadly, with the help of NFC technology, inductance does not arise which can charge your smartphones.
The transmission frequency of data in NFC Technology is 13.56 megahertz. You can send data at the speed of 106, 212, or 424 kilobits per second. If seen, it is enough to send small data transfers such as contact details, pictures or music, or to pay.
To determine what type of information is being discharged within two devices, the NFC standard is divided into three distinct modes of operation.
- Peer-to-peer (eg for file transfers)
- Reader/writer (eg to read tags of NFC posters)
- Card emulation(e.g., for Payments)
This is the most commonly used mode. These are mainly used in smartphones. It provides support for exchange between two NFC-enabled devices. In this mode, both devices switch while sending data while active in the active mode and receiving passive data.
Read/write mode, this is a one-way data transmission. Here’s the active device, which can also be your smartphone, links up with another device, to read information from it. This mode is used in NFC advert tags.
This is the final mode of operation. Here the NFC device can be used as a smart or contactless credit card, and easy payments can be made through a tap on public transport systems.
How does NFC work in Android?
NFC transmits and receives data through radio waves. This is an established standard of wireless communication, so if any devices remain sticky on these NFC protocols then they can easily communicate with each other. This is slightly different from working with Bluetooth as it works through electromagnetic induction. One of its wins is that it has some passive device, such as a poster or sticker, which does not require any external power source to work, and can easily transmit data to an active device such as a smartphone. When he comes in his content then
As an active NFC device, a smartphone can send and receive data through NFC. It mainly works in three modes:
- Reader/writer ( eg to read tags of NFC posters)
- Card emulation (e.g. for Payments )
- Peer-to-peer ( eg for file transfers )
How to use NFC easily?
Like Bluetooth, data transfer in NFC does not have to be manual pairing or device discovery. A connection in NFC starts automatically when another NFC device comes in a four-inch range of another NFC device. Once both devices come in the same range then they instantaneously communicate with each other and start sending the prompt to the user. If seen, NFC has a lot of usefulness. Here you will tell people about some methods where NFC is used between two devices.
Digital Wallet: Your wallet or passbook asks you to confirm the payment when you bring your smartphone closer to a payment point or contactless reader (around 4 inches). Once you confirm, the transaction is successful.
Sharing between Android Devices: When you keep two NFC enabled devices in range, you have a message prompt that asks you if you want to “beam” your content (videos, contact information, or photos) Want to or does not want any other android device With this you can easily share your files.
NFC Chips: These “taps” can be programmed by doing some specific tasks with the help of Tasker, such as Tasker, when they are scanned. For example, when you scan a similar chip on the desk and scan it, it works like a frozen phone such as vibrating the phone, disabling GPS, or just turning on work-related notifications.
How to know if your Android smartphone has NFC or not?
This is very simple. For this, you have to follow the instructions outlined in your phone.
Settings> More or Settings> Wireless & Networks
After doing this, if you show an NFC option, then it seems that Smartphones have an NFC option. This option is often hidden so it is not visible. Apart from this, nowadays in most smartphones, you can see a small NFC logo in rear panels.
Some problems used in Android
- Not all devices have an NFC chip, which makes it difficult to use it, but gradually it has become very common and these features are being provided in most of the devices.
- Often NFC chips are not all in one place, they become rubbed with each other.
- In this, cross-compatibility is not universal within devices, it happens in some specific file types that cause the issue of compatibility.
What are NFC Advantages:
Most consumers want convenience while paying. In today’s society, people are more likely to be comfortable. NFC is a very good option in this thing. This helps your mobile device merge with the wallet. In this process, NFC does an important job as payment can only be done with a simple touch. With this, you can imagine how long long lines of the Grocery Store can be ended soon enough.
NFC can be adapted in all situations. You can talk about any situation whether it is using bank cards for transit passes, movie passes, reward systems or keys. Ideally, NFC can be used in a broad range of industries.
3. Better Customer Service
A lot of work gets automated due to the arrival of NFC, which increases the customer service. This gives companies more time to provide better service to their customers.
4. Real-Time Updates
Since real-time data can be fetched from many places with the help of NFC, many tasks can be easily maintained. There is no need for more people.
5. NFC enabled credit cards are more secure than a credit card magnetic strip.
6. In order to process the transaction, a PIN is required which makes it more secure.
7. Retailers do not have credit card information as they do not have physical access to your credit card information.
What are the NFC Disadvantages:
1. Problems in Company Agreements
NFC says it can be used anywhere and at any time. But this is not entirely okay because there are many companies that prohibit the use of NFC, so sometimes problems arise in company agreements.
because NFCs are completely merged into mobile phones. So if hackers are hacked on the phone then they can leak all your confidential information. Therefore, NFC is not considered to be much secure.
3. Implementation issue
Since NFC is not a feature of many devices, it is not easy to implement NFC properly.
this technology is a bit more costly than the rest. Due to being more costly, many businesses do not like to adopt it.
What does NFC work?
By the way, NFC has lots of applications, but here you will be telling people about some such application.
1. Using Smart Cards
NFC integrated smart cards, making payments easier and better than the traditional multiple step payment process. Top payment services such as Visa and MasterCard also now provide NFC embedded smart cards to their customers.
NFC integrated smart cards are used for fast payments, in grocery stores, parking tickets, adding shopping points, the redemption of coupons etc. All major banks in the world are being promoted in the use of NFC integrated chips.
2. E-wallet (payment using a smartphone)
The cashless payment system is becoming very popular with mobile devices. They are providing more convenience to customers. Service providers are now integrating the payment option with smartphones for which they are embedded in an NFC tag. Apple pay, Google Wallet (Android pay) and Samsung pay are very popular among these smartphone payment systems.
3. Using Smart Ticketing
Integrated Smart Chips, it is replacing traditional ticketing systems with smart tickets. This makes passengers, trains and bus passengers very much comfortable. NFC tags are also used in Smart Posters, movie tickets, a ticket to concerts, advertisements, flyers and information links.
4. Medicine and Healthcare
NFC integrated system is used in medicine and healthcare activities. NFC offers much greater accuracy and convenience, while medicines are prescribing, it becomes easy to check-in, payments, to check the status of the patient, to track their records.
NFC integrated devices can be easily paired and configured. Medical professionals can easily schedule schedules and access to medical devices and equipment.
5. Keyless Access
Keyless access is a very familiar application near field communication. This is a very popular choice because of the convenience of NFC’s and easy to implement.
NFC and RFID tags can be used to access doors and restricted areas. It can be used to access vehicles like access keys, identification badges and cars.
Smart Tags is used more in modern manufacturing industries. This can be done by identifying any product in any company in each process stage. Besides, shipment of products can track them correctly. Due to unique identification numbers, it helps the manufacturers to efficiently manage their products and in some cases where the use of the return or warranty period for replacement, service and maintenance is also used.
7. Logistics and
shipping NFC and RFID tags are used more in logistics and shipping industry. By using them, they can be tracked accurately so that there is a possibility of at least an error in their end.
8. Smart Inventory Management:
Retail RFID tags are used for better management of inventories in retail shops and large-scale supermarkets. Smart inventory management software can easily be updated in real-time, so that information about how many items are in stock and when it is about to be completed can be obtained in advance.
9. Theft control
RFID tags can be used to reduce theft. Valuable things can be protected with the help of smart tags. In any of the objects, if the smart tags are embedded, they will trigger the trigger if they pass any RFID proximity. The information about the theft of which can be found.
What are the Future Applications of Near Field Communication?
By the way, NFC is going to work very much in the future. But before that let’s know about this kind of future application.
1. With the help of Smart Home
NFC and RFID technology, we can turn our normal home into a smart home. We can customize any particular application with the help of our smartphone. Not only that, we can also activate the NFC tag located in it, control the house equipment of the house, can control tasks like app launching, access/lock doors, set alarm functions with the help of your smartphone.
2. Internet of Things and 5G
IoT and 5G together generate many new technologies to emerge. NFC enabled device is used in IoT and 5G enabled networks, thereby increasing both their implementation and efficiency.
3. Integrated Smartphone Applications
Smart RFID tags can be used to configure smartphone applications. Such as receiving loyalty points from any loyalty program, entering membership access, entering a restricted area, and many customized applications.
NFC tags are going to play a very important role in the coming time. It can be used in most areas such as smart transport, aviation industry, shipping, manufacturing industry automation. By integrating NFC technology with our modern data communication and transaction process, it makes our work more convenient, saving time, enhances the efficiency of energy and the most important thing helps in improving security.
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