SlideShare a Scribd company logo

Near Field Communiation

•Download as PPTX, PDF•
•
S
Sai Charan Gaddam

Near Field Communication (NFC) allows communication between devices within close proximity using radio waves. NFC works through inductive coupling between loop antennas in devices operating at 13.56 MHz with data transfer rates from 106-424 Kbps. It can operate in both active and passive modes. NFC provides an easy and secure way to transfer data quickly by touching or bringing devices close together. Potential applications include mobile payments, ticketing, data sharing, and access control.

Related slideshows

Near field communication ppt
Near field communication pptNear field communication ppt
Near field communication ppt
 
Nfc presentation
Nfc presentationNfc presentation
Nfc presentation
 
Near field communication(NFC)
Near field communication(NFC)Near field communication(NFC)
Near field communication(NFC)
 
1 of 16
Near Field Communication Presented by G. Sai Charan
CONTENTS 1. What is NFC? 2. Operation of NFC 3. Modes of operation 4. Comparing with existing technologies 5. Pros and cons 6. Applications 7. Conclusion
WHAT IS NFC???  NFC is wireless technology which provides communication between two mobile phones which contain NFC tags, using short range radio waves.  Both devices can communicate with each other using NFC technology when they touch each other or brought very close to each other .  NFC is an extension of Radio frequency identification or RFID technology.
 NFC is compatible with RFID infrastructure.  NFC-based communication between two devices is possible when one device acts as a reader/writer and the other as a tag.
OPERATION OF NFC  Near field communication is based on inductive coupling.  NFC works using magnetic induction between two loop antennas located within each other's 'near field’.  Operating frequency is 13.56 MHz. data rate 106Kbps to 424 Kbps.
MODES OF OPERTAION MODES OF OPERATION PASSIVE MODE ACTIVE MODE
MODES OF OPERATION  Active mode: Both Initiator and Target device communicate by alternately generating their own field. A device deactivates its RF field while it is waiting for data.  Passive mode: The Initiator device provides a carrier field and the target device answers by modulating existing field. In this mode, the Target device may draw its operating power from the Initiator.
COMPARISON WITH EXISTING TECHNOLOGY Bluetooth IrDA NFC Benefits of NFC Network Type Point-to- multipoint Point-to-point Point-to-point Easy setup Bring close to pair Range 10m 1m <0.1m Safe, suitable for crowded areas Speed 721 Kbps 115 Kbps 424 Kbps Improving to 1Mbps Setup time 6s 0.5s <0.1s Fast transactions Modes Active-active Active-active Active-active Active-passive Compatible with RFID No No Yes Work with existing infrastructure Cost Moderate Low Low Affordable Power consumption High Low Low Battery saver
ADVANTAGES OF NFC  High convenience to the user, because the data exchange is done by bringing two mobiles together.  It is bidirectional.  Doesn’t require line of sight.  Provides communication to non self powered devices.  Reduces cost of electronic issuance.  No special software.  No search and pair procedure.
DISADVANTAGES  Not enough NFC enabled mobile devices on the market yet.  Very less data transfer rate  Range is very less  Security issues • Eavesdropping • Data corruption • Data manipulation • Imposter attacks • Theft
APPLICATIONS  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.
APPLICATIONS  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.
APPLICATIONS  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.
APPLICATIONS
CONCLUSION  NFC is an efficient technology for communication within short ranges. Another significant advantage is its compatibility with existing RFID infrastructure. Also combining with existing technologies like Bluetooth or Infrared can increase its range of applications.
THANK YOU ANY QUERIES?

More Related Content

Near Field Communiation

  • 2. CONTENTS 1. What is NFC? 2. Operation of NFC 3. Modes of operation 4. Comparing with existing technologies 5. Pros and cons 6. Applications 7. Conclusion
  • 3. WHAT IS NFC???  NFC is wireless technology which provides communication between two mobile phones which contain NFC tags, using short range radio waves.  Both devices can communicate with each other using NFC technology when they touch each other or brought very close to each other .  NFC is an extension of Radio frequency identification or RFID technology.
  • 4.  NFC is compatible with RFID infrastructure.  NFC-based communication between two devices is possible when one device acts as a reader/writer and the other as a tag.
  • 5. OPERATION OF NFC  Near field communication is based on inductive coupling.  NFC works using magnetic induction between two loop antennas located within each other's 'near field’.  Operating frequency is 13.56 MHz. data rate 106Kbps to 424 Kbps.
  • 6. MODES OF OPERTAION MODES OF OPERATION PASSIVE MODE ACTIVE MODE
  • 7. MODES OF OPERATION  Active mode: Both Initiator and Target device communicate by alternately generating their own field. A device deactivates its RF field while it is waiting for data.  Passive mode: The Initiator device provides a carrier field and the target device answers by modulating existing field. In this mode, the Target device may draw its operating power from the Initiator.
  • 8. COMPARISON WITH EXISTING TECHNOLOGY Bluetooth IrDA NFC Benefits of NFC Network Type Point-to- multipoint Point-to-point Point-to-point Easy setup Bring close to pair Range 10m 1m <0.1m Safe, suitable for crowded areas Speed 721 Kbps 115 Kbps 424 Kbps Improving to 1Mbps Setup time 6s 0.5s <0.1s Fast transactions Modes Active-active Active-active Active-active Active-passive Compatible with RFID No No Yes Work with existing infrastructure Cost Moderate Low Low Affordable Power consumption High Low Low Battery saver
  • 9. ADVANTAGES OF NFC  High convenience to the user, because the data exchange is done by bringing two mobiles together.  It is bidirectional.  Doesn’t require line of sight.  Provides communication to non self powered devices.  Reduces cost of electronic issuance.  No special software.  No search and pair procedure.
  • 10. DISADVANTAGES  Not enough NFC enabled mobile devices on the market yet.  Very less data transfer rate  Range is very less  Security issues • Eavesdropping • Data corruption • Data manipulation • Imposter attacks • Theft
  • 11. APPLICATIONS  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.
  • 12. APPLICATIONS  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.
  • 13. APPLICATIONS  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.
  • 15. CONCLUSION  NFC is an efficient technology for communication within short ranges. Another significant advantage is its compatibility with existing RFID infrastructure. Also combining with existing technologies like Bluetooth or Infrared can increase its range of applications.