Skip to main content

What is Near Field Communication: Explained

NFC i.e. Near Field Communication is a way of communication between two electronic devices one among which is mostly a portable device such as smartphones. These devices can communicate with each other when brought within 4 cm of range. NFC is being used in various ways such as sharing photos,  making mobile payments, getting information of posters etc. This process requires atleast one of the devices involved to have internet access.

This is a short distance wireless mode of communication which involves two devices : Active device and Passive device.

The NFC device can work in three modes:
- NFC peer-to-peer
- NFC reader/writer mode
- NFC card emulation

NFC peer-to-peer:
In this both the devices are active devices that is both devices generates radio waves through which they communicate with each other. Only one device generates radio waves at a time and receiver connects to it and receives the shared files and when another device is active the first one does not generate the signals. The radio waves are generated at the carrier frequency of 13.56 Mhz.

NFC Reader/Writer:
In this one device is active and other device is passive. In this user access the information from the NFC tag using Smartphones. Active device reads/writes the data to NFC using the principle of electromagnetic induction. NFC device sends the radio waves at carrier frequency of 13.56 Mhz. Whenever the active device is brought withing the range it generates radio waves which are detected by the chip in passive device which in turn generates power for chip and activates it for transferring the information stored in it. Once the device is powered up the chip responds back by the technique known as Load Modulation. In this technique the tag uses internal clock of chip and generates auxiliary frequency of 848 khz.

NFC Card emulation:
This is similar to NFC reader/writer in which one device is portable such as smartphones and are mostly used for making mobile payments. Both the devices involved are active devices. In this our smartphone work as passive smart card, therefore do not generate radio waves and responds back to requested data by payment terminal. Its operating principle is similar to reader/writer mode.

Various Applications of NFC:
NFC is being used for profile sharing, pairing different devices, mobile payments, information sharing using smart posters and business cards, home automation, health care, library systems and personal usage etc.
Just by using NFC brightness of embient lights in room can be changed. It can be used for changing the temperature of the AC as well as in auto close doors.

Comments

  1. You wrote a great blog post explaining about Near Field Communication. I hope to read more blog from you in the future. NFC Tagify is one of the leading NFC products and services providers in the UK. NFC Tagify offers contactless NFC tags, PVC business cards, NTAG stickers, chips, anti-metal/on metal and many customised NFC products. NFC Tagify manufacture products to comply with NFC Forum specifications. NFC Tagify also offers NFC tag encoding in bulk.

    ReplyDelete

Post a Comment

Popular posts from this blog

How IoT will impact online gaming industry.

Internet of Things, also known as IoT, is a hot tech that is on everybody’s lips. It is a network of physical devices such as vehicles, home appliances and other electronic devices through internet connectivity which enables these objects to connect and exchange data. There are endless opportunities in IoT, when you start connecting things with things, humans with humans, or humans with things. Nowadays this hot tech has become an important part of our lives. Companies are earning huge amount of money by connecting devices and their revenue chart have skyrocketed. Gaming industry is one of the major industry which is impacted by IoT, and it’s most significant impact is on online gaming, whether they are consoles or online gambling. Impact of IoT on Casinos: One of the key area which has flourished over time is gambling industry. Online casinos have been effected by the growth of IoT. Playing poker or blackjack remotely without going to the casinos is of huge advantage as peop

Monitors and TV: Similarities and Differences

Monitors have faster response time than TVs and have higher refresh rates, lower input lag which make them better choice for gaming. Lot of us are confused whether, we should buy TV or monitor or can we interchange each other. We sometimes play games on HDTV or watch movies on computer monitor but that doesn't make them the same device. TVs have features not included in monitors, and monitors are generally smaller than TVs. However, TV and monitor have lot of similarities and have of dissimilarities. How They are Similar Following are the similarities in both Monitor and TV Screen Size When buying a new TV people prefer bigger screen size. However, screen resolution and panel type, play important role in image quality of device. As nowadays more content is in 4K hence while buying brand new TV nowadays, it should definitely support 4K. Overall, you can buy smaller 4K 43″ monitor or a 4K 50″-55″ TV by spending same amount of money. Screen Resolution TVs are availab

Chromecast: All you need to know

Digital media player, Chromecast is a small dongle developed by Google for accessing playbacks from mobile device or computers on high definition TVs. The device controls/initiate the playback of internet streamed audio and visual content on TVs through mobile or web Apps. The device supports Google cast for mirroring of content on HD TV's. Google Cast SDK is a third party modification software which was released on 3rd Feb, 2014. Third party Apps can use google cast for enabling their apps to be accessible through Chromecast on high definition Tvs. After the release, 20,000 google cast ready apps were sold till May 2015. 30 million units of Chromecast are sold till now in US making it the best seller streaming device in US in 2014. There are three Chromecast device launched till now: 1. Chromecast 1st Generation 2. Chromecast 2nd Generation 3. Chromecast 3rd Generation Chromecast 1st Generation It is the first Chromecast device announced on July 24,2013 a