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Gaurov Narayanaswamy, Shesh Kumar Jagannatha and Daniel W. Engels  Slide  Blocking Reader  15 April  2010 Handheld Readers  Alien Readers  Alien Readers  Sirit Readers  Tagged Objects Blocking Envelope
Introduction ,[object Object],[object Object],[object Object],[object Object],[object Object],Reader Back-end Information System Reader Antenna Tags  (Recall Excalibur, UPM, Alien Squiggle) Blocking Reader  15 April  2010
Threats to Privacy and Security  [1]  Ari Juels. Rfid security and privacy: A research survey. IEEE Journal on Selected Areas in Communication,, 24. ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Picture [1] Blocking Reader  15 April  2010
Previous Work: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[2]  Ari Juels , Ronald L. Rivest , Michael Szydlo, The blocker tag: selective blocking of RFID tags for consumer privacy, Proceedings of the 10th ACM conference on Computer and communications security, October 27-30, 2003, Washington D.C., USA [3] S. A. Weis, S. Sarma, R. Rivest, and D. Engels. Security and privacy aspects of low-cost radio frequency identification systems. In First International Conference on Security in Pervasive Computing, 2003. Blocking Reader  15 April  2010
Motivation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Blocking Reader  15 April  2010
ISO 180006-C Gen 2 Protocol.  Figure: Single Tag Reply  [3] Blocking Reader  15 April  2010
Theory of Tag capture:  ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Blocking Reader  15 April  2010
Theory of Tag capture for a typical Passive Tag:  ,[object Object],[object Object],[object Object],Blocking Reader  15 April  2010
Implementation of Blocking Reader: Blocking Reader  15 April  2010
Complete circuit diagram Blocking Reader  15 April  2010
Performance of Blocking Reader: ,[object Object],[object Object],[object Object],Blocking Reader  15 April  2010 Sniffer Blocking Reader Squiggle Tag Distance D Height 1.4 m
Performance of Blocking Reader cont..: V apc  = 1.6 (Power= 9dBm) Blocking Reader  15 April  2010
Performance of Blocking Reader cont..: Maximum Blocking distance when an unauthorized Sirit Reader is present  V apc  = 2.6 (Power= 21dBm) V apc  = 1.6 (Power= 9dBm) Blocking Reader  15 April  2010 Sirit Reader Blocking Reader Squiggle Tag 1.5 mts Distance D Height 1.4 mts
Performance of Blocking Reader cont..: Blocking Range results comparing with Friis Power Blocking Reader  15 April  2010
Performance of Blocking Reader cont..: Blocking Envelope: Around the Tag Blocking Reader  15 April  2010 Sirit Reader Blocking Reader Squiggle Tag 2.1 mts Distance D Height 1.4 mts θ
Blocking Reader application: Performance of BR in presence of Human Blocking Reader  15 April  2010 Sirit Reader Squiggle Tag Height 1.4 mts θ Human Body Distance D 2.7 mts Blocking Reader
Conclusions: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Blocking Reader  15 April  2010
Thank You Any Questions ?? Blocking Reader  15 April  2010

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Rfid2010 Presentation Final1

  • 1. Gaurov Narayanaswamy, Shesh Kumar Jagannatha and Daniel W. Engels Slide Blocking Reader 15 April 2010 Handheld Readers Alien Readers Alien Readers Sirit Readers Tagged Objects Blocking Envelope
  • 2.
  • 3.
  • 4.
  • 5.
  • 6. ISO 180006-C Gen 2 Protocol. Figure: Single Tag Reply [3] Blocking Reader 15 April 2010
  • 7.
  • 8.
  • 9. Implementation of Blocking Reader: Blocking Reader 15 April 2010
  • 10. Complete circuit diagram Blocking Reader 15 April 2010
  • 11.
  • 12. Performance of Blocking Reader cont..: V apc = 1.6 (Power= 9dBm) Blocking Reader 15 April 2010
  • 13. Performance of Blocking Reader cont..: Maximum Blocking distance when an unauthorized Sirit Reader is present V apc = 2.6 (Power= 21dBm) V apc = 1.6 (Power= 9dBm) Blocking Reader 15 April 2010 Sirit Reader Blocking Reader Squiggle Tag 1.5 mts Distance D Height 1.4 mts
  • 14. Performance of Blocking Reader cont..: Blocking Range results comparing with Friis Power Blocking Reader 15 April 2010
  • 15. Performance of Blocking Reader cont..: Blocking Envelope: Around the Tag Blocking Reader 15 April 2010 Sirit Reader Blocking Reader Squiggle Tag 2.1 mts Distance D Height 1.4 mts θ
  • 16. Blocking Reader application: Performance of BR in presence of Human Blocking Reader 15 April 2010 Sirit Reader Squiggle Tag Height 1.4 mts θ Human Body Distance D 2.7 mts Blocking Reader
  • 17.
  • 18. Thank You Any Questions ?? Blocking Reader 15 April 2010