Information and the Future

This is the blog of the Information and the Future task force of the Rolfing Library at Trinity International University. The IF task force exists to explore the role of libraries in the future of Christian higher education.

Thursday, July 05, 2007

Captcha with a purpose

Captcha is the name for the distorted words that you have to enter on some websites, such as ticketmaster or blogger, to verify that you are a real person and not an automated bot.

Wired magazine reports in the July 2007 issue (article not online) that the inventor of captchas, Luis von Ahn, is creating a new version of captchas that include two fuzzy words. One word is the control word used by the computer to verify a human user but the other is a word from Internet Archive's book scanning project, the optical recognition software failed to indentify. A pretty ingenious way to clean up a scanned text, in my humble opinion.

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