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December 10, 2002
Gotcha
This has to be one of the cooler projects I've seen online. Captcha.net has a mechanism to (more-or-less) reliably ascertain that a human is on the other end of a connection. (Remember: On the Internet no knows you're a dog). It has usage in spam control and other fields.
The NYTimes article and as always metafilter
Posted at December 10, 2002 05:09 PMComments
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