Near field communication

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Near field communication

  1. 1. What is NFC?  Short Range Wireless Technology.  Provides unique advantages over other Wireless Technologies.  Offers safe&intuitive communication
  2. 2. ◦ Easy to use wireless communication interface for the last few centimeters ◦ Easy to use target selection, by simply holding two devices close to each other NFC is as easy as….
  3. 3.  Wireless Short Range Communication Technology  Based on RFID technology at 13,56 MHz  Operating distance typical up to 10 cm  Compatible with today’s field proven contactless RFID technology  Data exchange rate today up to 424 kilobits/s RFID object 13,56MHz RF Link
  4. 4. NFC Block DiagramAnalog circutary-modulationRF detects RF field at 13.56mhzUART-protocol requirementsFIFO buffer-data transfer from UART to HOSTHOST-implemented to fulfill customer requirements
  5. 5. Various Components: Initium Promi SD 102 Bluetooth adapter antenna for the NFC PN531 NFC PN531 board power supply distributor PCB DCE-DCE serial cable
  6. 6. Features Not restricted to 1 to 1 comm. Multiple devices can communicate with each other using same frequency at 13.56MHz @ 106kb/s to 848kb/s No special software is required. Peer to Peer communication is possible. Requires log power than Bluetooth. Good choice for secure transactions contactless credit card payments
  7. 7. APPLICATIONSMobile TicketingMobile paymentBluetooth pairingMerchant card systemPeer-peer systemApplicationsoftware(mobile client)
  8. 8. Advantages No interference due to decaying fields Allows communication bothbetween two powered and passive devices Convenient usage by simply holding thetwo devices close to each other
  9. 9. Disadvantages Data transfer rate is small compared to bluetooth and other wireless communications No protection in eavesdropping No protection in data modification
  10. 10. Conclusion  Providing secure channel will avoid the draw backs such as evesdropping or data modification.  NFC is compatible with existing RFID infrastructures.  NFC is an efficient technology for communications with short ranges

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