CAPTCHA

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About

According to wikipedia, a CAPTCHA (a contrived acronym for "Completely Automated Public Turing test to tell Computers and Humans Apart") is a type of challenge–response test used in computing to determine whether or not the user is human.

The component TCaptchaLabel allows to create a CAPTCHA to be used on any LCL form. It displays random characters which are colored and rotated and overlayed by colored lines to impede machine detection of the CAPTCHA text.

Retrieved from "http://wiki.freepascal.org/index.php?title=CAPTCHA&oldid=147051"