NFC (NEAR FIELD COMMUNICATION) FULL INFORMATION

             WHAT IS NFC ( NEAR FIELD                      COMMUNICATION) ?

Have you ever heard about NFC (What is NFC in )? 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-ranged. 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 where it's enable, it has begun to become more and more in today's smartphone. So today I thought why i should be give you  full information about what NFC , 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.

Full Information about NFC

What does NFC mean? NFC's full form 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 in 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.

NFC COMMUNICATION  SYSTEM OVERVIEW  

NFC has been developed through 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 (Types of NFC in Hindi)

NFCs are mainly of two types.

Active NFC DevicePassive 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 active device or Passive device. Active NFC device needs 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 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 Techonlogy is 13.56 megahertz. You can send data in 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 dischanged within two devices, the NFC standard is divided into three distinct modes of operation.

》Peer-to-peer (e.g., for file transfers)
》Reader / writer (e.g., to read tags of NFC
》posters) Card emulation (e.g., for Payments)

Peer-to-Peer

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.

Reader / Writer

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.

Card Emulation

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 tap on public transport systems.

Share: