December 10, 2002 1:17 PM Subscribe
CAPTCHA is the Completely Automated Public Turing Test to Tell Computers and Humans Apart. The test promises to keep online polls honest, block search engine bots, and end spam as we know it. The program generates and grades tests that (1) most humans can pass and (2) current computer programs can't pass. For example, humans can read distorted text but current computer programs can't. To see if you're human or not, take a Captcha test yourself here. To read more check out this nytimes article.
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