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UAAG 2 partial conformance options (Action 704)

From: Richards, Jan <jrichards@ocadu.ca>
Date: Wed, 19 Dec 2012 21:24:28 +0000
To: "w3c-wai-ua@w3.org" <w3c-wai-ua@w3.org>
Message-ID: <0B1EB1C972BCB740B522ACBCD5F48DEB03B94FB9@ocadmail-maildb.ocad.ca>
I have:
ACTION-704: Propose a type of partial conformance for mobile apps that are actually packaged user agents that display limited types of content

My proposal is to allow apps to not meet certain SC by claiming that the content they are designed to display is so constrained that the accessibility feature required by the SC is not relevant. For example, if an airline's app knows it will only be rendering textual information (e.g. schedules) via a built in browser component, the browser component does not have to support SC such as: 1.2.1 Support Repair by Assistive Technologies; 1.1.5 Size and Position of Time-Based Media Alternatives; etc. etc.

Partial UAAG 2.0 Conformance - Constrained Content (Level A, AA, or AAA)
This conformance option may be selected when the user agent is deployed such that it can only be used to display a tightly constrained set of content (e.g. as part of a mobile app that only displays text messages). The conformance claim must list those success criteria  which are judged not applicable due to the nature of the constrained content.

ATAG2 also includes a couple of "Partial Conformance" types that might be usefully adapted:

Partial UAAG 2.0 Conformance - User Agent Component (Level A, AA, or AAA)
This conformance option may be selected when a user agent would require additional user agent functionality in order to conform as a complete user agent. This option may be used for components with very limited functionality (e.g. a plug-in) up to nearly complete systems (e.g. a user agent that only lacks mouseless browsing).

The level of conformance (A, AA, or AAA) is determined as above except that, for any "no" answers, the user agent must not prevent the success criteria from being met by another user agent component as part of a complete user agent system.

Note: User agents would not be able to meet partial conformance if they prevent additional user agent components from meeting the failed success criteria (e.g., for security reasons).

Partial UAAG 2.0 Conformance - Platform Limitations (Level A, AA, or AAA)
This conformance option may be selected when a user agent is unable to meet one or more success criteria because of intrinsic limitations of the platform (e.g., lacking a platform accessibility service). The conformance should explain what platform features are missing.


T 416 977 6000 x3957
F 416 977 9844
E jrichards@ocadu.ca
Received on Wednesday, 19 December 2012 21:24:52 UTC

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