What Does it Stand For?
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What Does CAPTCHA Stand For?
CAPTCHA stands for Completely Automated Public Turing Test To Tell Computers And Humans Apart.
CAPTCHA was coined in 2000 by Luis von Ahn, Manuel Blum, Nicholas J. Hopper and John Langford (then of IBM).
If you know of another acronym for CAPTCHA then please suggest it as a new acronym for CAPTCHA.