Most of those who are aware of disability issues, don't use any barriers
at all.
CAPTCHA is often used to prevent abuses from people using automated
robot programs.
To solve the problem of visually impaired people, there are audio
CAPTCHA solutions.
Regards,
Manuel Lemos
Manuel:
No offense meant, but please review this --
http://www.access-matters.com/2005/05/22/quiz-115-did-a-captcha-catch-ya/
-- before installing a CAPTCHA.
Accessibility matters.
tedd
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