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Google Purchases Carnegie Mellon University Spin-Off ReCaptcha

By: Zlatos, Bill | Tribune-Review/Pittsburgh Tribune-Review, September 17, 2009 | Article details

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Google Purchases Carnegie Mellon University Spin-Off ReCaptcha


Zlatos, Bill, Tribune-Review/Pittsburgh Tribune-Review


Google Inc. has acquired a Carnegie Mellon University spin-off company that uses word puzzles to protect computer users from spam and fraud.

Google said Wednesday that it has bought ReCaptcha Inc., a CMU spin-off that develops online puzzles to boost computer security. Terms of the deal were not disclosed.

Luis von Ahn, an assistant professor of computer science at CMU, founded ReCaptcha in 2008. The company uses puzzles with squiggly words and numbers that humans can read but computers cannot.

Words in the puzzles come from old books and newspapers whose ink and paper have degraded -- hampering the ability of computers to recognize them. As a result, when …

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