In this video, what is NFC, How NFC works and some useful applications of NFC have been explained. And at the latter part of the video, NFC has been compared with the other technologies like Bluetooth, RFID and QR code.
What is NFC?
NFC stands for Near Field Communication. It is short distance wireless communication technology. So. when two NFC enabled devices are very close to each other (roughly around 4 cm), then they can communicate with each other using radio waves.
How NFC Works?
NFC enabled devices communicates with each other using radio waves. And three modes of communication is supported by NFC technology.
1) Card Emulation mode
2) Peer-to-Peer Mode
3) Reader/Writer Mode
In peer-to-peer mode, both NFC enabled devices generates the radio wave alternatively and communicates with each other.
In reader/writer mode, devices communicate each other using the principle of electromagnetic induction. The active device transmits the radio wave and the passive device responds back using the load modulation technique.
In card emulation mode, the smartphone acts like the passive smart card and the working principle of this mode is similar to the reader /writer mode.
NFC Standards:
To establish the communication between the NFC enabled devices, certain standards have been defined. And these NFC standards are known as NFC-A, NFC-B, NFC-F, and NFC-V.
Applications of NFC:
1) Mobile Payments
2) Home Automation
3) As a Smartcard or Smart poster
4) Library System
5) Health Care
6) connecting/pairing devices
7) Personal usage
Timestamps for the different topics covered in the video is given below:
0:56 What is NFC?
1:50 How NFC Works?
5:51 NFC Standards (NFC-A, NFC-B, NFC-F, and NFC-V)
6:35 Application of NFC
8:41 Comparision of NFC with other Technologies (Bluetooth, RFID, and QR Code)
This video will be helpful to everyone in understanding what is NFC and how NFC technology works.
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Music Credit:
www.bensound.com/