CAPTCHA Inventor Luis Ahn: Putting CAPTCHA system to Good Use

Dr Luis von Ahn invented CAPTCHA images that websites ask you to type to post a comment or send an email.

May 13, 2008

Luis von Ahn, who invented the ubiquitous CAPTCHA system to prevent spammers from filling out Internet forms, talks to Wired Science about his research and other CAPTCHA related games he created to help people solve complex CAPTCHA images while still having fun. Thanks SEJ.

Related: Protect Your Email from Spam with CAPTCHA