In Search Of The Perfect CAPTCHA

Submitted by Nirhana
In Search Of The Perfect CAPTCHA

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CAPTCHAs, or Completely Automated Public Turing Tests to Tell Computers and Humans Apart, exist to ensure that user input has not been generated by a computer. These peculiar puzzles are commonly used on the Web to protect registration and comment forms from spam. To be honest, I have mixed feelings about CAPTCHAs.

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