Captcha

From Bjoern Hassler

Interesting article about captchas (via OpenCast mailing list)

• http://www.newscientist.com/article/dn16973-innovation-harnessing-spammers-to-advance-ai.html

Background:

• http://www.newscientist.com/article/dn16973-innovation-harnessing-spammers-to-advance-ai.html
• http://www.richgossweiler.com/projects/rotcaptcha/rotcaptcha.pdf
• http://recaptcha.net/
• http://recaptcha.net/learnmore.html
• http://recaptcha.net/reCAPTCHA_Science.pdf