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[Bug 9216] New: Provide a CAPTCHA example that is in accord with WCAG 2 or Defer to "HTML5: Techniques for providing useful text alternatives"

From: <bugzilla@wiggum.w3.org>
Date: Mon, 08 Mar 2010 16:42:26 +0000
To: public-html-bugzilla@w3.org
Message-ID: <bug-9216-2486@http.www.w3.org/Bugs/Public/>
http://www.w3.org/Bugs/Public/show_bug.cgi?id=9216

           Summary: Provide a CAPTCHA example that is in accord with WCAG 2
                    or Defer to "HTML5: Techniques for providing useful text
                    alternatives"
           Product: HTML WG
           Version: unspecified
          Platform: PC
               URL: http://dev.w3.org/html5/spec/text-level-
                    semantics.html#unknown-images
        OS/Version: All
            Status: NEW
          Keywords: a11y, a11y_text-alt
          Severity: normal
          Priority: P2
         Component: HTML5 spec bugs
        AssignedTo: dave.null@w3.org
        ReportedBy: laura.lee.carlson@gmail.com
         QAContact: public-html-bugzilla@w3.org
                CC: ian@hixie.ch, mike@w3.org, public-html@w3.org, public-
                    html-a11y@w3.org
        Depends on: 8171


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 per bug 9169
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


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Received on Monday, 8 March 2010 16:42:29 GMT

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