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surindersharma 0 Junior Poster

As all of us are very well aware with the CAPTCHA, basically they are those tricky and funky looking characters (mainly alphabets and numbers). CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) are those letters which we need to submit while we are submitting form or web pages.

source from : http://www.ideazpod.com/2009/09/17/google-acquired-recaptcha/

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