Making Sense of Wireless Technologies
•Download as PPTX, PDF•
2 likes•367 views
A knowledge sharing deck put together for VJ's/Isobar that serves as an introduction to RFID and NFC wireless technologies, what they are, how they work and strengths and weaknesses. Hope you enjoy.
Recommended
More Related Content
What's hot
What's hot (20)
Viewers also liked
Viewers also liked (11)
Similar to Making Sense of Wireless Technologies
Similar to Making Sense of Wireless Technologies (20)
Recently uploaded
Recently uploaded (20)
Making Sense of Wireless Technologies
- 2. Making Sense of Wireless Technologies NFC & RFID
- 3. “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 close proximity, usually no more than a few centimeters”
- 5. QR-Like usage is common, unfortunately.
- 6. This is a USB NFC device
- 7. This is a NFC device
- 8. NFC can communicate across devices...
- 9. .. or by reading inexpensive tags
- 10. Tags store 1kb of data
- 12. NFC communication is exclusive between two devices
- 13. Examples
- 14. We used NFC to gamify the Wet’n’Wild theme park
- 15. Small PC’s with USB readers built in to a kiosk
- 16. Each tag contained an ID stored against a user in the cloud
- 17. DDB used it to make the ordinary, extraordinary
- 18. $0.2 (per band) $56 (per USB reader) Here are some basic costs
- 19. Exciting, isn’t it? Now, RFID.
- 20. “Radio-frequency identification (RFID) is the wireless non-contact use of radio-frequency fields to transfer data using tags. The tags contain electronically stored information”
- 21. RFID Patented in 1983, used in cattle identification
- 22. Sydney E-Toll
- 25. RFID is not NFC (but kinda is) RFID (1983) – Precursor to NFC - Operates at various frequencies (tag and readers) - Different scanning distances - Readers sense multiple tags NFC (2004) – Refined version of RFID - Fixed frequency (13.56 MHz) - Fixed scanning distance (5 – 10 cms) - Two way communication
- 26. How it works A ‘Tag Reader’ and a ‘Tag’ is all that is needed. Laptop & RFID USB Reader Radio Signal RFID Tag
- 27. Tags There are two kinds of tags, passive and active. Passive tags are powered by the Readers signal thus have a low distance when it comes to reading < 2m. Active tags use a small battery and have much larger read distances. Battery Passive RFID Tag Reader Signal Active RFID Tag
- 28. Tag Usage Tags have different usage abilities: Read & Write, Read, Write Once Laptop & RFID USB Reader RFID Tag Laptop & RFID USB Reader RFID Tag
- 29. Tag Content 1kb of data limit on passive tags, so not much data storage. Sadface Makes use of RFID passive tags pretty much limited to housing a unique string of data as a unique identifier, but this is fine... 10001101001001011 01000001000110100 10010011010000000 01000110100100100 110100000000 10001101001001011 01000000001000110 10010010011010000 10100110111010101 01 RFID Tag
- 30. ID Linkage … as we can link each unique Tag ID number to an account, i.e. Facebook. Process: Tag -> Swipe -> Account Action 10001101001001011 01000001000110100 10010011010000000 01000110100100100 110100000000 10001101001001011 01000000001000110 10010010011010000 10100110111010101 01 RFID Tag Laptop & RFID USB Reader Account
- 31. RFID Frequencies Various Distances, Various Frequencies Can get confusing but offers flexibility with scanning ranges. 120-150 kHz Up to 10 cm 13.56 kHz Up to 1 m 433 MHz 1 - 100 m 865 – 868 MHz 1-2m 902 – 928 MHz 1-2m 3.1 – 10 GHz Up to 200 m
- 32. Example Account Actions When the reader interprets the signal, it sends the ID to the laptop Which then performs actions, such as: Activate software (game, photo booth) Social Network connect Increment read counts for tracking Connect to other shared accounts for the ID Survey / Voting mechanics Contests Location Based (more to come)
- 33. Diet Plan? As an example. Imagine having your dietary plan put online buy your nutritionist and a corresponding ID to your RFID tag. The next restaurant you enter has a digital menu. It senses your tag is 30cm away and reads your tag, collects your dietary requirements and then filters out foods that will not suit your dietary needs. This is entirely possible. Privacy concerns, lots.
- 34. Costs Simple Wristband Simple Reader 13.56 kHz – 10cm read $0.30ea bought in bulk 13.56 kHz USB – 1m read $30 - $70
- 35. Real-Time Trilateration Fancy name for positioning using multiple readers. Triangulation. Possible, but not very accurate. RFID Tag Laptop & RFID USB Reader Laptop & RFID USB Reader Laptop & RFID USB Reader
- 36. Real-Time Trilateration Measuring the movement http://www.openbeacon.org/