Definitions for "CAPTCHA"
ompletely utomated ublic uring test to tell omputers and umans part. From Wikipedia: "The term was coined in 2000 by Luis von Ahn, Manuel Blum, and Nicholas J. Hopper of Carnegie Mellon University, and John Langford of IBM. A common type of captcha requires that the user type the letters of a distorted and/or obscured sequence of letters or digits that appears on the screen. Because the test is administered by a computer, in contrast to the standard Turing test that is administered by a human, a captcha is sometimes described as a reverse Turing test."
a Completely Automatic Public Turing test to tell Computers and Humans Apart
a computer-generated test that humans can
Chinese Codebook compression utilities CSSCheck