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Re: I feel that the 2 sufficient techniques should be 'and' not 'or'.

From: Loretta Guarino Reid <lorettaguarino@google.com>
Date: Wed, 23 Mar 2011 09:38:31 -0700
Message-ID: <AANLkTimeM8_diZw8eNZJ7iJWnCwNfKSEGsyOGOH1Hivd@mail.gmail.com>
To: sheena.mccullagh@blueyonder.co.uk
Cc: public-comments-wcag20@w3.org
On Sat, Feb 19, 2011 at 3:58 PM, <noreply@w3.org> wrote:

> Name: Sheena McCullagh
> Email: sheena.mccullagh@blueyonder.co.uk
> Affiliation: Individual
> Document: W2
> Item Number: Success Criterion 2.4.1
> Part of Item:
> Comment Type: technical
> Summary of Issue: I feel that the 2 sufficient techniques should be 'and'
> not 'or'.
> Comment (Including rationale for any proposed change):
> I had originally read this that 1 and 2 were exactly that an 'and', then
> someone I know who does accessibility testing for a living, pointed out to
> me that I was wrong. They are not 'and', ie you can do one or the other.
>  However I see a problem with that:
> Skip links are of main benefit to sighted users who navigate via the
> keyboard and are of only very limited benefit to screen reader users.
>  However H69 (heading elements) is only of use to screen readers and
> provides no help whatsoever for sighted users navigating via the keyboard.
> (I don't know enough about map, frame and scripting to comment on those, but
> as they have been grouped with H69, I suspect that they too are of little or
> no benefit to sighted people who navigate with the keyboard.)
> Nonetheless, if someone writes a web page to H69, they would be deemed to
> have passed SC 2.4.1, even though they have not provided any method for
> sighted keyboard users to bypass blocks of content that are repeated on
> multiple pages.  The most number of hits of the tab key that I counted
> before getting to the main page content on one web site was 69 each time I
> went onto a new page.
> Proposed Change:
> Please make it 'and' so that both sighted keyboard users and screen reader
> users are helped.  At the moment it's perfectly possible to help only one of
> those groups and not help the other and still pass this SC.
> ==============================
Response from the Working Group
It is only necessary to implement one of the listed sufficient techniques
for this, or any other, success criterion. Authors may choose to implement
more than one technique to improve usability, of course.

Skip links may not be the preferred mechanism for screen reader users, but
links work for them, so skip links will permit them to skip over the
repeated content.

The User Agent Notes for H69 discuss the native support for navigating by
headings that is provided in Opera, and notes that for other browsers,
plugins may be needed. Authors who rely on H69 must ensure that it is
accessibility supported for their users.

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
Received on Wednesday, 23 March 2011 16:39:05 UTC

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