- From: Karl Dubost <karl@w3.org>
- Date: Tue, 22 Nov 2005 17:45:35 -0500
- To: "'public-evangelist@w3.org' w3. org" <public-evangelist@w3.org>
A quick mail about CAPTCHA. In the blog world, site owners have to managed the spam hitting the comments form. To avoid it, some services or software have created a system which gives an image to challenge bots and then avoid spam. Unfortunately, this method has more than one problem. The WAI has published a note about this. [[[ Inaccessibility of Visually-Oriented Anti-Robot Tests Problems and Alternatives Abstract A common method of limiting access to services made available over the Web is visual verification of a bitmapped image. This presents a major problem to users who are blind, have low vision, or have a learning disability such as dyslexia. This document examines a number of potential solutions that allow systems to test for human users while preserving access by users with disabilities. ]]] -- Inaccessibility of Visually-Oriented Anti-Robot Tests http://www.w3.org/TR/turingtest/ Wed, 05 Nov 2003 17:22:02 GMT -- Karl Dubost - http://www.w3.org/People/karl/ W3C Conformance Manager *** Be Strict To Be Cool ***
Received on Tuesday, 22 November 2005 22:45:54 UTC