NEAR FILED COMMMUNICATION TECH DETAILS

1. Near Field Communication
By,
Siddharth D.C.(1RV09IT043)
Shomik.M .(1RV09IT040)
Varun .R. Athreya .(1RV09IT065)
IT Dept., RVCE

2. Outline
 Brief introduction
 History
 Key benefits
 NFC Operation
 NFC tags & Security Threats
 NFC and other wireless technologies
 NFC Application
 NFC in Market
IT Dept., RVCE

3. What is NFC ?
 Standards based technology used to provide
short range wireless connectivity, that carry
secure two way interactions between electronic
devices.
 Provides contact-less communication up to
distance of 5 cm.This makes it more “secure”.
 Utilizes inductive coupling for its operation.
 Form of RFID but has specific standards of
operation.
IT Dept., RVCE

4. Origins
 NFC traces its roots back to Radio-frequency
identification, or RFID. RFID allows a reader to
send radio waves to a passive electronic tag for
identification and tracking.
 1983 The first patent to be associated with the
abbreviation RFID was granted to Charles
Walton.
 2004 Nokia, Philips and Sony established the
Near
Field Communication (NFC) Forum
 2006 Specification for "Smart Poster" records
IT Dept., RVCE

5. ….
 2006 Nokia 6131 was the first NFC phone
 2009 In January, NFC Forum released Peer-to-
Peer standards to transfer contact, URL, initiate
Bluetooth.
 2010 Samsung Nexus S: First Android NFC
phone
 2011 Google I/O "How to NFC" demonstrates
NFC to initiate a game and to share a contact,
URL, app, video,
 2011 NFC support becomes part of the Symbian
mobile operating system with the release of
Symbian Anna version.
IT Dept., RVCE

6. Key benefits
 NFC provides a range of benefits to consumers
and businesses, such as:
 Intuitive: NFC interactions require no more than a
simple touch
 Versatile: NFC is ideally suited to the broadest
range of industries, environments.
 Open and standards-based: The underlying layers
of NFC technology follow universally implemented
ISO, ECMA, and ETSI standards
 Technology-enabling: NFC facilitates fast and
simple setup of wireless technologies, such as
Bluetooth, Wi-Fi, etc.)
…..
IT Dept., RVCE

7. …
 Inherently secure: NFC transmissions are short
range (from a touch to a few centimeters)
 Interoperable: NFC works with existing
contactless card technologies
 Security-ready: NFC has built-in capabilities to
support secure applications
IT Dept., RVCE

8. Inductive coupling
An inductively coupled
transponder comprises an
electronic data carrying device,
usually a single microchip, and
a large coil that functions as an
antenna
Inductively coupled
transponders are almost
always operated passively
IT Dept., RVCE

9. NFC Tech Device Types &
Oper’n near field communication standard
 The NFC
defines two types of NFC device.
- Initiator
-Target
• Active mode of communication: In the active
NFC mode of communication, both devices
generate an RF signal on which the data is
carried.
• Passive mode of communication: In this mode
of communication, only one NFC device
generates an RF field. The second passive
device which is the target uses a technique
called load modulation to transfer the data back
to the primary device or initiator.
….
IT Dept., RVCE

10. ….
 NFC- wireless technology
Operating frequency-13.56 MHz (unregulated
13.56 MHz frequency band).
As a result no licenses are required for operation
on these frequencies.
 NFC -Half duplex as the same channel is used
for both transmit and receive.
 Technique- Listen before talk protocol
IT Dept., RVCE

11. Data Transfer & Tags
 NFC Tag- passive device
The users touches an NFC enabled device onto
the tag. A small amount of power is taken by the
NFC tag from the reader/writer to power the tag
electronics. The tag is then enabled to transfer a
small amount of information to the reader/writer.
 The data stored in the tag memory is transferred
to the NFC enabled device. Although normally
only a small amount of data, this may be used to
direct the device to a website URL, it may be a
small amount of text, or other data.
…..
IT Dept., RVCE

12. …
TAG’S TYPE CAPABILITY MEMORY SPEED
TYPE 1 Read & Rewrite 2 kbyte 109 kbit/s
TYPE 2 Read ,Rewrite 2 kbyte 109 kbit/s
Configure-Read
only
TYPE 3 Complex 2 kbyte 220 kbit/s
operation
TYPE 4 Read / 32 kbyte 424 kbit/s.
Rewritable
/Read-only
IT Dept., RVCE

13. Tag
characteristics
 Read speed
 Die size
 Unit price
IT Dept., RVCE

14. NFC Security Threats
 Eaves dropping
 Data corruption
 Data modification
 Man-in-middle attack
IT Dept., RVCE

15. Comparisons
IT Dept., RVCE

16.  Bluetooth: Although both Bluetooth and NFC
can be used to transfer data, Bluetooth has
been designed to transfer data over much
greater distances. NFC is designed to be
close proximity only.
 Wi-Fi / IEEE 802.11: Wi-Fi is designed for
local area networks, and is not a short range
peer to peer technology.
 RFID: Although RFID is very similar to NFC
in many respects, RFID is a much broader
technology. NFC is a specific case which is
defined by standards enabling it to be
interoperable.
IT Dept., RVCE

17. NFC Applications
IT Dept., RVCE

18. ….
IT Dept., RVCE

19. NFC in Market
 Nokia 700 Samsung nexus s
And many more phones from Nokia with symbian
Anna and Samsung Android phones support NFC
IT Dept., RVCE

20. Bibliography
 www.nfcforum.com
 www.radioelectronics.com
 www.gizmodo.com
 www.blognfc.com
 www.engadget.com

21. IT Dept., RVCE