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Important Points:
  • CAPTCHA is a short form for - Completely Automated Public Turing Test To Tell Computers and Humans Apart
  • A CAPTCHA is a program that protects websites against bots by generating and grading tests that humans can pass but current computer programs cannot
  • reCAPTCHA is seeming the most famous and secure CAPTCHA service. Is there any other better service we have to found out. If any body know they can let us know.

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