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Your comments on WCAG 2.0 Public Working Draft of May, 2007

From: Loretta Guarino Reid <lorettaguarino@google.com>
Date: Sat, 3 Nov 2007 21:15:05 -0700
Message-ID: <824e742c0711032115q24cfe9c3x61f48ae451d9ca34@mail.gmail.com>
To: "Ben Maurer" <bmaurer@andrew.cmu.edu>
Cc: public-comments-WCAG20@w3.org

Dear Ben Maurer,

Thank you for your comments on the 17 May 2007 Public Working Draft of
the Web Content Accessibility Guidelines 2.0 (WCAG 2.0
http://www.w3.org/TR/2007/WD-WCAG20-20070517/). The WCAG Working Group
has reviewed all comments received on the May draft, and will be
publishing an updated Public Working Draft shortly. Before we do that,
we would like to know whether we have understood your comments
correctly, and also whether you are satisfied with our resolutions.

Please review our resolutions for the following comments, and reply to
us by 19 November 2007 at public-comments-wcag20@w3.org to say whether
you are satisfied. Note that this list is publicly archived. Note also
that we are not asking for new issues, nor for an updated review of
the entire document at this time.

Please see below for the text of comments that you submitted and our
resolutions to your comments. Each comment includes a link to the
archived copy of your original comment on
http://lists.w3.org/Archives/Public/public-comments-wcag20/, and may
also include links to the relevant changes in the WCAG 2.0 Editor's
Draft of May-October 2007 at

Thank you for your time reviewing and sending comments. Though we
cannot always do exactly what each commenter requests, all of the
comments are valuable to the development of WCAG 2.0.


Loretta Guarino Reid, WCAG WG Co-Chair
Gregg Vanderheiden, WCAG WG Co-Chair
Michael Cooper, WCAG WG Staff Contact

On behalf of the WCAG Working Group

Comment 1: Audio CAPTCHAs
Source: http://lists.w3.org/Archives/Public/public-comments-wcag20/2007Jul/0214.html
(Issue ID: 2355)
Original Comment:

Audio CAPTCHAs need to include substantial amounts of background noise
in order to be secure against robotic attacks

Audio CAPTCHAs must also not be captioned for obvious reasons.

Proposed Change:
To 1.4.6 add:

"Except if the audio is provided as a CAPTCHA and a non-audio CAPTCHA
is available that provides equivalent access"

To 1.2.* add:

"Except if the media is provided as a CAPTCHA and an image only
CAPTCHA is provided" (similar to the text in 1.1.1)

Response from Working Group:

We have changed 1.4.6 to include this exception.

(changes marked with ***)
"1.4.6 Low or No Background Audio: Audio content *** that is not an
audio CAPTCHA and *** that contains speech in the foreground does not
contain background sounds, background sounds can be turned off, or
background sounds are at least 20 decibels lower than the foreground
speech content, with the exception of occasional sound effects."

Regarding captions, an audio-only CAPTCHA would not be considered
multimedia and would therefore not need to be captioned.
Received on Sunday, 4 November 2007 04:15:14 UTC

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