Can't read your way past the humans-only gateway on that Web site? NuCaptcha has a filter that's easier for you, harder for robots.
Google's massive book-scanning project could produce more accurate results with ReCaptcha, a twist on the captcha-style log-in screens found on many Web sites.
Those online vision tests aren't just a way to tell human from bot. They're also helping rejuvenate old books and newspapers.
Turn annoyances into good with ReCaptcha, the distributed captcha project.
Duolingo Incubator aims to help people create new language lessons so that foreign languages aren't quite so foreign any more.
The free language-learning service that doubles as a crowdsourced text translation platform will open to the public on June 19.
Imperva study finds CAPTCHAs, designed to keep spambots off Web sites, can easily be broken by humans and can turn people away if they are difficult or annoying to complete.
Web sites including Blizzard, eBay, and Visa's Authorize.net use a flawed antibot mechanism, Stanford researchers say. They say companies should take security more seriously.
Keen to anthropomorphize your pet? Google+ will let you annotate your photos now, which actually is a good idea.
Borrowing from the field of machine vision, Stanford University researchers have discovered how to solve over 90 percent of NuCaptcha's are-you-a-human video challenges.