QRCodes

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Bridging the physical and virtual worlds with funny looking barcodes

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QRCodes

  1. 1. QR Codes Bridging the physical and virtual worlds with funny-looking barcodes. Tristan Roddis, Cogapp www.QRtists.com
  2. 2. What are QR codes? <ul><li>2-D barcodes - more data in same space </li></ul><ul><li>Invented in Japan in 1994 </li></ul><ul><li>Error tolerant </li></ul><ul><li>Alphanumeric up to 4,296 characters </li></ul><ul><li>Support for multiple parts </li></ul><ul><li>ISO standard </li></ul><ul><li>Similar to: Data Matrix, Shotcode, Quick code </li></ul>
  3. 3. Why are they special? <ul><li>Because they can be decoded by mobile phones </li></ul><ul><li>Built in to many phones (esp. Japan) </li></ul><ul><li>Available for lots of others (http://qrtists.com/s) </li></ul><ul><li>[insert impressive statistic about mobile phone use here] </li></ul>
  4. 4. Demo
  5. 5. Generating QR codes <ul><li>Websites </li></ul><ul><li>Firefox extension </li></ul><ul><li>Open source C program: qrencode </li></ul><ul><li>PHP/CGI </li></ul><ul><li>See list at http://qrtists.com/s </li></ul>
  6. 6. Uses of QR codes <ul><li>Tracking objects </li></ul><ul><li>Business cards </li></ul><ul><li>Email sigs </li></ul><ul><li>Linking to websites </li></ul><ul><li>Adverts </li></ul>
  7. 9. Source: http://www.pinktentacle.com/2007/04/movie-qr-code-and-kung-fu-high-school-girls/
  8. 11. Source: http://www.gearfuse.com/junkfood-maker-prints-qr-code-on-prawn-crackers/
  9. 12. Demo
  10. 13. Why is this more interesting? <ul><li>Physical location maps to virtual location </li></ul><ul><li>Same input token provides different output (website maintains state) </li></ul><ul><li>Users can be tracked (cookies etc.) </li></ul><ul><li>Users provide information just by using the system (web 2.0 Holy Grail!) </li></ul>
  11. 14. Source: http://news.bbc.co.uk/1/hi/technology/6938244.stm
  12. 15. Parting thoughts <ul><li>Link up to dynamic websites </li></ul><ul><li>Use in different situations </li></ul><ul><li>Games </li></ul><ul><li>Ticketing – concert example </li></ul><ul><li>Previewing – music store example </li></ul><ul><li>Collecting - museum example </li></ul><ul><li>Need an open source reader! </li></ul>
  13. 16. Questions?

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