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8/12/2019 SEMINAR Presentation Main

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PRESENTATION

ON

NEAR FIELD

COMMUNICATION

(NFC)

jyoti

1141631021


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Contents What is NFC?

Evolution of NFC

Operation of NFC

Modes of Operation

Applications of NFC

Advantages and Disadvantages of NFC


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WHAT IS NFC ?

NFC or near field communication is a short rangewireless communication technology.

A radio communication is established by touchingtwo phones or keeping them of a proximity of a few

centimeters. NFC is mainly aimed for mobile or handled device.

NFC is an extension of Radio FrequencyIdentification or RFID technology.

Radio-Frequency Identification (RFID) is the use ofradio waves to read and capture information stored ona tag attached to an object.


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EVOLUTION OF NFC

TECHNOLOGYIn 2004 NFC Forum was formed by Nokia, Philips,

Sony to set standards for NFC. Every NFC enabled

device will have N-Mark trademark, developed by

NFC forum.


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EVOLUTION OF NFC

TECHNOLOGYIn 2006

First mobile phone (Nokia 6131) with NFC released by

NOKIA.


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EVOLUTION OF NFC

TECHNOLOGYIn 2010

First android phone SAMSUNG NEXUS S with NFC

support released.


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OPERATION OF NFC

NFC works with two terminals

1.Initiator

2.Target

The initiator actively generates RF field that can power

a passive target.


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OPERATION OF NFC

NFC is based on inductive coupling.

NFC works using magnetic induction between twoloop antennas.

Operating frequency 13.56 MHz and data rate variesfrom 106Kbits/s to 424Kbits/s.

For two devices to communicate using NFC, onemust have an NFC reader/writer and one must have

an NFC tag. The tag is essentially an integratedcircuit containing data connected to an antenna thatcan read and written by the reader.


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OPERATION OF NFC

Card Emulation Mode

Card emulation mode enables NFC-enabled

devices to act like smart cards, allowing users to

perform transactions such as purchases, ticketing,

etc with just a touch.


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OPERATION OF NFC

Peer to Peer Mode

Peer to Peer Mode enables two NFC-enabled devices to

communicate with each other to exchange information

and share file.


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OPERATION OF NFC

Reader/Writer Mode

Reader/Writer mode enables NFC-enabled devices to

read data or information stored in NFC tags embedded

in smart poster.


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MODES OF OPERATION

Modes of

operation

Active mode Passive mode


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MODES OF OPERATION

In active mode, both devices with NFC chip generates

an electromagnetic field and then exchange data.

In this mode both devices typically have power

supplies.


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MODES OF OPERATION

In passive modethere is only one active device and

other device uses that field to exchange information.


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APPLICATIONS OF NFC

Applications of NFC can be split into the following

three basic categories:

Touch and Go

Touch and Confirm

Touch and Connect


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APPLICATIONS OF NFC

Touch and Go

Applications such as access control or transport/event

ticketing, where the user only to bring the device

storing

the ticket or access code close to the reader. Example

for picking up an internet URL from a smart label on

poster.


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APPLICATIONS OF NFC

Touch and Confirm

Applications such as mobile payment where the user

has to confirm the interaction by entering a

password or just accepting the transaction.


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APPLICATIONS OF NFC

Touch and Connect

Linking two NFC-enabled devices to enable peer to

peer transfer of data such as downloading music or

songs, exchanging images.


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ADVANTAGES OF NFC

No special software

High convenience to the user, because the data exchange isdone by bringing two mobiles together.

Secure communication.

Ease of use.

NFC can be used together with existing technologies likeBluetooth and thus act for longer range also.

DISADVANTAGES OF NFC

The system has the limitation that it can be operated only with

devices under short range i.e.around 10cm.

The data transfer rate is very less at about 106kbps,212kbps

and 424kbps.


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SOME DEVICES USING

NFC TECHNOLOGY Nexus S

Samsung Galaxy S II

Google Nexus S 4G

Samsung Galaxy Note

Nokia 6212 classic


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THANK YOU!!!

ANY QUERIES ???

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