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Captcha stands for "Completely Automated Public Turing test to tell Computers and Humans Apart". It is a challenge-response test used in account creation or user log on to determine whether or not the user is human.

TWiki related:

-- Contributors: PeterThoeny, WillNorris - 16 Jul 2006

http://yro.slashdot.org/yro/04/01/28/1344207.shtml describes an interesting realtime technique for circumventing CAPTCHA.

-- WillNorris - 18 Apr 2005

If you plan to code a CAPTCHA solution for TWiki, make sure it will destroy sessions afterwards... http://www.puremango.co.uk/cm_breaking_captcha_115.php

-- AlsterWassermann - 23 May 2005

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Topic revision: r8 - 2006-09-29 - BenVoui
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