Just about everyone hates typing in those annoying CAPTCHA messages before submitting something online, but these geeks decided to put their disdain to good use by transforming those codes into funny comics and art. Continue reading to see thirty more examples.

The term “CAPTCHA” was coined in 2000 by Luis von Ahn, Manuel Blum, Nicholas J. Hopper, and John Langford (all of Carnegie Mellon University). It is an acronym based on the word “capture” and standing for “Completely Automated Public Turing test to tell Computers and Humans Apart”.

Carnegie Mellon University attempted to trademark the term, but the trademark application was abandoned on 21 April 2008. A CAPTCHA is sometimes described as a reverse Turing test, because it is administered by a machine and targeted at a human, in contrast to the standard Turing test that is typically administered by a human and targeted at a machine.

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