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Near field communication


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  • 1. Near Field CommunicationBy,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 couplingAn inductively coupledtransponder comprises anelectronic data carrying device,usually a single microchip, anda large coil that functions as anantennaInductively coupledtransponders are almostalways 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 SPEEDTYPE 1 Read & Rewrite 2 kbyte 109 kbit/sTYPE 2 Read ,Rewrite 2 kbyte 109 kbit/s Configure-Read onlyTYPE 3 Complex 2 kbyte 220 kbit/s operationTYPE 4 Read / 32 kbyte 424 kbit/s. Rewritable /Read-only IT Dept., RVCE
  • 13. Tagcharacteristics 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 sAnd many more phones from Nokia with symbianAnna and Samsung Android phones support NFC IT Dept., RVCE
  • 20. Bibliography
  • 21. IT Dept., RVCE