Near field communication - Data transmission


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Near field communication (NFC) is a set of standards for smartphones and similar devices to establish radio communication with each other by touching them together or bringing them into proximity, usually no more than a few inches.

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Near field communication - Data transmission

  2. 2. What is NFC??? • A short range, high frequency, low bandwidth and wireless communication technology between two devices. • Based on RFID(Radio Frequency Identification Service) Technology. • Mainly aimed for mobile & handheld devices.
  3. 3. Evolution of NFC • 2002- The technology was jointly developed by Philips & Sony. • 2004- Nokia, Philips and Sony established the NFC Forum. • 2006- Initial specifications for NFC tags were given. • 2006- Nokia 6131 was the first NFC enabled Phone. • 2010- Samsung Nexus S was the first Android NFC enabled Phone.
  4. 4. Working Principle • NFC works on the principle of RFID (Radio Frequency Identification). • Types of Coupling in RFID:  BackScatter Coupling  Capacitive Coupling  Inductive Coupling.
  5. 5. Operation Of NFC • Near field communication is based on inductivecoupling. • NFC works using magnetic induction between two antennas located within each other's 'near field’.
  6. 6. Modes of Operation
  7. 7. Modes Of Operation • In Active mode, both devices with NFC chip generates an electromagnetic field and exchange data. Two NFC enabled devices transferring data in active mode
  8. 8. Modes of Operation • In Passive mode, there is only one active device and the other uses that field to exchange information. A NFCenabled mobile phone is paired with a RFIDtagged "smart poster"
  9. 9. Applications of NFC • NFC applications can be split into the following three basic categories: Touch and Go Touch and Confirm Touch and Connect
  10. 10. Applications Of NFC • Touch and Go Applications such as access control or transport/event ticketing, where the user needs 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 a poster. Touch and go Mode of application
  11. 11. 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.
  12. 12. Applications Of NFC • 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. Data transfer via NFC
  13. 13. NFC Specifications • NFC operates at 13.56 MHz and at rates ranging from 106 kbit/s to 424 kbit/s. • NFC always use an initiator and a target; the initiator actively generates an RF field that can power a passive target. Initiator Device Target
  14. 14. Comparison with Existing Technology
  15. 15. Advantages Of NFC • High convenience to the user, because the data exchange is done by bringing two mobiles together. • Secure communication. • No special software. • No manual configuration and settings. • No search and pair procedure.
  16. 16. Limitations 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.
  17. 17. • • • • • • • Some Devices using NFC Technology Nexus S Google Nexus S 4G Samsung Galaxy S II Samsung Galaxy Note Galaxy Nexus Nokia 6212 Classic Nokia 6131 NFC
  18. 18. Devices with NFC Technology
  19. 19. Future of NFC • New generations of iPhone, iPod and iPad products would reportedly be equipped with NFC capability which would enable small-scale monetary transactions. • Recently, Microsoft announced that all Windows 8 Phone devices will make use of the NFC technology.