Friday, August 16, 2013

captcha seminar report pdf, ppt

captcha seminar report pdf, ppt


CAPTCHA is an acronym for "Completely Automated Public Turing test to tell Computers and Humans Apart." It is a type of challenge-response test used in computing to ensure that the response is not generated by a computer. The process usually involves one computer (a server) asking a user to complete a simple test which the computer is able to generate and grade. Because other computers are unable to solve the CAPTCHA, any user entering a correct solution is presumed to be human. A common type of CAPTCHA requires that the user type letters or digits from a distorted image that appears on the screen.

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