1. Ruby Identicon
swdyh
RejectRejectKaigi 2008

3. AutoPagerize

5. Identicon

6. ?

8. Don Park's Daily Habit -
Visual Security: 9-block IP
Identification
http://www.docuverse.com/blog/donpark/2007/01/18/
visual-security-9-block-ip-identification

11. IP

12. 32

13. SHA1
32

14. SHA1 …

15. IP

16. ID
OpenID URL …

18. Java

19. JavaScript
(canavas)

21. PHP, Perl,
Python, .NET, ...
http://www.docuverse.com/blog/donpark/2007/01/20/
identicon-third-party-implementations

22. Ruby

24. quilt
Ruby Identicon

25. RMagick Ruby/GD

26. github
→ sudo gem install swdyh-quilt -s
http://gems.github.com/
rubyforge
→ sudo gem install quilt

28. require 'rubygems'
require 'quilt'
identicon = Quilt::Identicon.new 'rejectkaigi'
identicon.write 'rejectkaigi_15.png'

30. identicon = Quilt::Identicon.new 'rejectkaigi',
:size => 500
identicon.write 'rejectkaigi_500.png'

33. github
http://github.com/swdyh/quilt/tree/master

34. RMagick Gem

35. http://identicon.relucks.org/

36. Identicon Web