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07 May 2008

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.

about the author

Amit Agarwal (@labnol) is a personal technology columnist and founder of Digital Inspiration, a widely-read tech and how-to blog since 2004. He also wrote this book. Email: amit@labnol.org

Tech Projects

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