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Originally Posted by Jakenavaro
whats is captcha for it is illegal or not?
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Quote:
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A CAPTCHA (IPA: /ˈkæptʃə/) is a type of challenge-response test used in computing to determine whether the user is human. "CAPTCHA" is a contrived acronym for "Completely Automated Public Turing test to tell Computers and Humans Apart", trademarked by Carnegie Mellon University. The process involves one computer (a server) asking a user to complete a simple test which the computer is able to generate and grade, but not able to solve on its own. Because computers are unable to solve the CAPTCHA, any user entering a correct solution is presumed to be human.
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http://en.wikipedia.org/wiki/Captcha
It is something you use to prevent spammers, hackers, scrapers, and other "surfers" that are controled by a computer, not a human. Only humans are supposed to be able to read them,
Occasionally a computer can too, depending on the captcha and the right code to "solve" it.
this is a captcha:
welcome to GFY