RE: Conforming alternative for mobile should not be Desktop

From: Katie Haritos-Shea GMAIL [mailto:ryladog@gmail.com]
Sent: Tuesday, June 28, 2016 4:22 PM

+1 to adding the note. What specific clarifications would you suggest, Jason?

[Jason] I would suggest either generalizing it to say that alternate versions provided to accommodate different devices or user agents often fail to be *conforming alternate versions* due to differences in information or functionality (along the lines that Patrick recommended) or clarifying the differences mentioned in the examples. For example, what does a “different menu mechanism” mean? A “simplified interface” is only materially different for this purpose if some functionality is removed; thus saying that it’s simplified isn’t enough to establish that it contains different information or functionality.
I think Patrick’s latest proposal clarifies the point well without entering into unnecessary detail.
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* katie *

Katie Haritos-Shea
Principal ICT Accessibility Architect (WCAG/Section 508/ADA/AODA)

Cell: 703-371-5545 | ryladog@gmail.com<mailto:ryladog@gmail.com> | Oakton, VA | LinkedIn Profile<http://www.linkedin.com/in/katieharitosshea/> | Office: 703-371-5545 | @ryladog<https://twitter.com/Ryladog>

From: White, Jason J [mailto:jjwhite@ets.org]
Sent: Tuesday, June 28, 2016 4:05 PM
To: David MacDonald <david100@sympatico.ca<mailto:david100@sympatico.ca>>; John Foliot <john.foliot@deque.com<mailto:john.foliot@deque.com>>
Cc: ALAN SMITH <alands289@gmail.com<mailto:alands289@gmail.com>>; Patrick H. Lauke <redux@splintered.co.uk<mailto:redux@splintered.co.uk>>; WCAG <w3c-wai-gl@w3.org<mailto:w3c-wai-gl@w3.org>>; public-mobile-a11y-tf@w3.org<mailto:public-mobile-a11y-tf@w3.org>
Subject: RE: Conforming alternative for mobile should not be Desktop



From: David MacDonald [mailto:david100@sympatico.ca]
Sent: Tuesday, June 28, 2016 3:44 PM
I think Jason had the fundamental question right. The small screen view has a different functionality from the large screen view, so I'm suggestiing we add a note 8  to the definitkon o Conforming alternative.

conforming alternate version

1.    conforms at the designated level, and

2.    provides all of the same information and functionality<https://www.w3.org/TR/WCAG20/#functiondef> in the same human language<https://www.w3.org/TR/WCAG20/#human-langdef>, and
...
<add> Note 8: If pages that are optimized for small screen have different functionality from pages optimized for large screen, such as a changed menu mechanism, or less content, or simplified interface, etc. the two views do not have the same functionality and therefore cannot be used as conforming alternatives for each other.</add>

[Jason] Arguably this example illustrates the requirement without changing it, which I expect is what was intended. “Less information” and “simplified interface” (if some functionality is missing from the simpler version) would both qualify as different content and function. A different menu mechanism might, or might not qualify depending on what the differences precisely are.

Thus the question is whether we have a disagreement here about what changes are sufficient to prevent a version from qualifying as a “conforming alternate version” for WCAG purposes. I would suggest clarifying the list of differences in the note.


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