http://tc.eserver.org/authors/Thatcher,_Jim A bibliography of works by Thatcher, Jim in the field of technical communication. en-us Copyright (c) 2005-08 by the EServer. All rights reserved. tclib-editorial@eserver.org (TC Library Editorial Board) webmaster@eserver.org (Geoffrey Sauer) http://tc.eserver.org/images/newlogo.gif http://tc.eserver.org/dir/Thatcher,_Jim http://tc.eserver.org/34147.html http://tc.eserver.org/34147.html My business and passion is accessibility and there is obviously a huge problem with these visual CAPTCHAs. If you used alt-text on this image, alt="e3TJ6Jdp", that would be fine and very welcome for blind visitors. It would also be welcome for any computer system seeking to sign up for lots of emails. Using alt-text on the image does not solve the problem! The visual image CAPTCHA is fundamentally inaccessible. For the example above, this means very simply that Yahoo excludes people who are blind (or vision impaired) from signing up for Yahoo email accounts. http://tc.eserver.org/27712.html http://tc.eserver.org/27712.html The legislation referred to as "Section 508" is actually an amendment to the Workforce Rehabilitation Act of 1973. The amendment was signed into law by President Clinton on August 7, 1998. Section 508 requires that electronic and information technology that is developed by or purchased by the Federal Agencies be accessible by people with disabilities. http://tc.eserver.org/26648.html http://tc.eserver.org/26648.html There is no question that the vast majority of tables on the Web are layout tables, used to structure the visual appearance of the page. Often the structure of tables is remarkably complex, with tables nested in tables as much as seven deep. http://tc.eserver.org/23164.html http://tc.eserver.org/23164.html The differences between the Section 508 accessibility guidelines and the W3C's Web Content Accessibility Guidelines (WCAG).