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Bugs/CAPTCHA
Provide a CAPTCHA example that is in accord with WCAG 2 or Defer to "HTML5: Techniques for providing useful text alternatives"
Bug Number
Bug Title
Provide a text alternative for the CAPTCHA example
Bug Number
Spec Section
Images whose contents are not known [1]
The "Images whose contents are not known" section of the HTML5 spec contains the following CAPTCHA example.
Sometimes the entire point of the image is that a textual description is not available, and the user is to provide the description. For instance, the point of a CAPTCHA image is to see if the user can literally read the graphic. Here is one way to mark up a CAPTCHA (note the title attribute):
<p><label>What does this image say? <img src="captcha.cgi?id=8934" title="CAPTCHA"> <input type=text name=captcha></label> (If you cannot see the image, you can use an <a href="?audio">audio</a> test instead.)</p>
Bug Description
A text alternative for this example is missing. Please provide one that is in line with WCAG 2 or defer to "HTML5: Techniques for providing useful text alternatives": http://dev.w3.org/html5/alt-techniques/ as a CAPTCHA example will be added there. http://www.w3.org/Bugs/Public/show_bug.cgi?id=9169
REFERENCES
http://dev.w3.org/html5/spec/text-level-semantics.html#unknown-images [1]
HTML5 Issue and Change Proposal
This is associated with HTML TRACKER ISSUE-31:
http://www.w3.org/html/wg/tracker/issues/31
Change Proposal - Replace img Guidance for Conformance Checkers:
http://www.w3.org/html/wg/wiki/ChangeProposals/ImgElement20090126