Nfc kdr

An Examination of the future of Near Field

Communication

Abdul Khader

CONTENTS

What is NFC?

How does it operates?

What are the current capabilities?

What is its future?

Conclusion

Introduction

Near Field Communication (NFC) refers to:

Short-range wireless connection (a

few centimetres).

Frequency : 13.56 MHz

Max. Bandwidth : 424Kbits/sec

Simple and safe.

Based on contactless

technologies and Radio Frequency

Identification (RFID), so you need a reader

and a tag.

Operation

NFC TAG

An RFID device - silicon memory chip connecting to external antenna. Tag does not have its own power source (passive). The passive tag absorbs a small portion of the energy emitted by the reader (phone), and starts sending modulated information when sufficient energy is acquired from the RF field generated by the reader.

NFC devices communicate via magnetic field induction, where two loop antennas are located within each other's near field, effectively forming an air-core transformer.

The reader continuously generates an RF carrier sine wave (at 13.56 MHz), watching always for modulation to occur. Detected modulation of the field would indicate the presence of a tag.

Operation Of NFC

Active vs Passive Device

Devices containing power sources are called as active

Mobile phoneNFC reader

Devices without any available power sources are called as passive RFID tag

Modes of Operation 

APPLICATION OF NFC 

NFC applications can be split into the following three basic categories:

Touch and Go

Touch and Connect

Touch and Confirm

Touch and Go

Applications such as access control or transport ticketing, where the user needs only to bring the device storing the ticket or access code close to the reader

Touch and Connect

Linking two NFC-enabled devices to enable peer to peer transfer of data such as downloading music, exchanging images or synchronizing address books.

Speakers (touch to connect)

Touch and Confirm

Applications such as mobile payment where the user has to confirm the interaction by entering a password.

Comparison With Existing Technologies

Current capabilities Sending simple data like applications,

contact information, send business cards, various files .

Payment.

Future of NFC

NFC powered Devices are smartcards for payment!

NFC powered Devices are contactless security cards!

Read NFC information Tags with your mobile and know everything!

Smart Keys to open car doors

Significantly more secure online shopping

Benefits of NFC

Ease of use (Very familiar to people, only touch).

No manual configuration and settings. No search and pair procedure. No special software. Automating Coupling. Inherent Security.

Disadvantages of NFC

The system has the limitation that it can

be operated only with devices under a short range.

The data transfer rate is very less.

Conclusion

NFC will provide convenience and added benefit for both the consumer and retailer.

THANK YOU