2. NFC – What is it ???
NFC or Near Field Communication is a short range high frequency
wireless communication technology.
A radio communication is established by touching the two phones or
keeping them in a proximity of a few centimeters.
NFC is mainly aimed for mobile or handheld devices.
NFC is an extension of Radio frequency identification.
It is a form of contactless communication between devices.
3. EVOLUTION OF NFC
TECHNOLOGY
In 2004, NFC Forum was formed by Nokia, Philips, Sony
to set standards for NFC . Every NFC enabled device will
have an “N-Mark” trademark ,developed by NFC Forum.
In 2006, first mobile phone( nokia 6131) with NFC was
released by NOKIA.
In 2010, first android phone SAMSUNG NEXUS S with
NFC support was released.
Sony introduced "Smart Tags", which use NFC technology
to change modes and profiles on sony smartphones.
4. OPERATION OF NFC
Near field communication is based on inductive-coupling.
NFC works using magnetic induction between two loop antennas.
A reader emits a small electric current, which creates a magnetic
field that in turn bridges the physical space between the devices. That
field is received by a similar coil in the client device, where it is turned
back into electrical impulses to communicate data such as identification
number, status information, or any other information.
So, NFC use an initiator and a target; the initiator actively
generates an RF field that can power a passive target, while 'active' or
'peer-to-peer' tags have their own power source and respond to the
reader using their own electromagnetic fields.
5. MODES OF OPERATION
Active mode-
In this mode, both devices with NFC chip can generate an
electromagnetic field and exchange information with each
other.
Inducing magnetic
field
Two NFC enabled devices transferring
data in active mode
7. APPLICATIONS OF NFC
Touch and Go
Applications such as access control, where the
user needs only to bring the device storing the
ticket or access code close to the reader.
Linking two NFC-enabled devices
to enable peer to peer transfer of
data.
Touch and Conect
8. APPLICATIONS OF NFC
Applications such as mobile
payment where the user has to
confirm the interaction by entering
a password or just accepting the
transaction.
Touch and Confirm
9. Benefits of NFC
1. Versatile: NFC is ideally suited to the broadest range of industries, environments,
and uses
2. Open and standards-based: The underlying layers of NFC technology follow
universally implemented ISO, ECMA, and ETSI standards
3. Technology-enabling: NFC facilitates fast and simple setup of wireless
technologies, (such as Bluetooth, Wi-Fi, etc.)
4. Inherently secure: NFC transmissions are secure due to short range
communication
5. Interoperable: NFC works with existing Contactless card technologies
6. Security-ready: NFC has built-in capabilities to support secure applications
10. ADVANTAGES OF NFC
High convenience to the user, because the data exchange
is done just by bringing two mobiles together.
Reduces cost of electronic issuance .
Secure communication.
No special software.
No manual configuration and settings.
No search and pair procedure.
NFC can be used together with existing technologies like
Bluetooth and thus act for longer range also.
NFC uses are practically limitless.
11. DISADVANTAGES OF NFC
The system has the limitation that it can be operated only
with devices under a short range i.e. around 10 cm.
The data transfer rate is very less at about 106kbps, 212
kbps and 424kbps.
Eavesdropping
Data Corruption and Manipulation
Theft
13. NEAR FIELD COMMUNICAITON
Mobile handsets are the primary target for NFC and soon NFC will be
implemented in most handheld devices.
The advancements in mobile wireless technology and communication
standards have enabled usage of contactless and NFC based payment
models.
The mobile wallet based payment model is gaining considerable
momentum and is currently being seen as one of the key payment model,
to promote contactless payment processing practices.
The mobile wallet technology enables the end-users to make payments
with their mobile wallet accounts, without having to use credit or debit
cards and hence this technology can also help users that do not use credit
or debit cards.
