Web surfers all too familiar with the distorted-letter tests that accompany so many site registration forms today can now take heart — the time they spend on those tests is being put to good use. Thanks to a project at Carnegie Mellon University, a new version of those pesky CAPTCHA tests makes the technology work double-duty: Not only does it continue to distinguish between legitimate human users and malevolent spam programs, it also uses the results to aid in the digitization of books for the Internet Archive.
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Original post by Katherine Noyes and software by Elliott Back
