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How does Near field communication (NFC) works

NFC - Near Field Communication - is a advanced level of wireless technology which connects or establish communication between similar devices by touching them together or bringing them into close proximity, usually no more than a few centimetres. It establishes communication in order to fasten the data transfer like Bluetooth (slower than NFC data transfer rate). NFC communication also works on radio frequency but still there is difference between them.

It is manufactured by Philips (MIFARE technology) or Sony (FeliCa technology). The NFC Forum was founded in 2004 by Philips, Sony and Nokia to encourage the rapid standardization of this technology and to let shared specifications ensure the necessary interoperability.
Important features of NFC:
1. Reach and availability: NFC has the potential over time to be integrated into every mobile handset in the world. This would give the technology a potential reach as global as the mobile phone itself. By integrating NFC technology into a mobile handset, users could gain access to a number of new services via their phone.

2. Variety of use: NFC can be used for a number of tasks, from payment for goods to ticketing and from pairing devices to sharing information or discovering new services. Examples of these applications are outlined in this document.

3. Ease of use: Because NFC only requires that two devices touch in order to communicate, NFC can simplify many tasks, from opening a web browser on a mobile phone to pairing two Bluetooth devices automatically to accessing wireless hotspots simply and easily.

4. Security: NFC requires a user to actively wave or hold their mobile device against another device or NFC station to activate a service or to share information. In so doing, the technology requires the user to make a positive action to confirm the transaction or exchange. In addition it is possible to build multiple levels of security into an NFC enabled device.

5. Value added services: NFC enables users to access value added services that would otherwise be unavailable with a traditional ticket or payment card. Just as users of prepay mobile services are able to access their current credit balance through the phone’s menu system, so users of an NFC enabled phone will be able to access similar information through their device. Furthermore, NFC enabled devices could access the mobile network to add credit to the device when it runs out or is low, or alternatively on a set date each week or month.
How NFC works:-
As a short-range wireless connectivity technology. NFC offers safe, simple and intuitive communication between electronic devices. Communication between two NFC devices occurs when they are bought within a few centimeters of one another. The short transmission range makes the NFC transmission safe and allows the user to control the usage.


NFC operates at 13.56 MHz and transfer data at up to 424 Kbits/second. Nokia participated actively in developing NFC standard further through the open NFC forum.
NFC and other wireless technologies


RFID (Radio Frequency Identifier) is a generic term for all applications that work from “electronic tags”. This system is based on the principle of reading an identifier, also called a “radiotag” and by analogy “radio barcode”. This system is frequently used in for instance supermarket distribution logistics. RFID includes two system families that function on the properties of electromagnetic exchange between two reels or antennas. Their particularity lies in the fact that they eliminate one of the two elements of autonomous feed, since the power is supplied by radio wave. The optimal functioning of these technologies therefore depends directly on the distance between the “reader” and the passive element. For inductive systems functioning in the 13.56 MHz band, information can only be exchanged over a few centimetres. NFC is therefore compatible with the 13.56 MHz family and is based on the ISO standard 18092 approved in 2003 that integrates standard 14443 (which defines so called “proximity” systems that can reach over 10 cm), as well as Sony’s FeliCa and Philips’s MIFARE systems.

Applications:-

application

1. Touch to connect - It allows the user to easily access mobile services and information from your surroundings.
- Touch the smart posters to buy tickets, view restaurants details, check weather forecast and much more.

2. Touch to tickets -

- Use the phone as contact less travel.
- Travel card details are stored in the secure element.
- View ticket info and latest transactions on the phone.

3. Touch to pay -

- Use your phone contact less payment card.
- Payment card details are stored in the secure element.
- View your transactions and balance histories whenever you want.
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