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Re: Animation in the user agent user interface

From: Jim Allan <jimallan@tsbvi.edu>
Date: Tue, 1 Oct 2013 10:33:59 -0500
Message-ID: <CA+=z1Wkf=P67-1FesmZ2EDPv253YwV4bfLj0x5nMBpxT5QP8VA@mail.gmail.com>
To: Greg Lowney <gcl-0039@access-research.org>
Cc: WAI-UA list <w3c-wai-ua@w3.org>
I like this. From reading the article in The Guardian, if Apple instituted
an OS level fix to block the OS animations (perhaps from TAB to TAB or
between UA instances) this would meet the SC?

so if a UA developer or extension developer decides on their own animation
scheme (separate from the OS animation) then it is up to the developer to
provide a mechanism to disable their own creations.

If an author creates some content that makes the browser UI have some
animation (animated scrollbar, address bar, etc. then it is an authoring
problem. If it is not an authoring problem, then we are back in the realm
of" recognized" animations, the browser can't fix what it doesn't know
about. One would think that the UA would know what is happening to its own
UI, but I have doubts.


On Sun, Sep 29, 2013 at 5:14 PM, Greg Lowney

>  An article "Why iOS 7 is making some users sick" in The Guardian this
> week (see References below) highlighted the issues faced by people with
> vestibular disorders, who can experience "intense nausea, dizziness and
> vertigo" triggered by animations on their mobile devices. My first thought
> was that UAAG20 already handled this by allowing the user to turn off
> animations, but on rereading it I find that's not the case: UAAG20 only
> requires the user be able to turn off animations *in content*, not those
> that are part of the user agent user interface. In fact, the only
> references to animation are in Guideline 2.11 - Provide control of
> *content* that may reduce accessibility.
> I think that's a major oversight; I believe UAAG should have a success
> criteria that requires that users be able to avoid animation in the user
> agent user interface.
> Obviously this is not only about people with vestibular disorders, but
> anyone who has difficulties with animations in content could presumably
> have the same difficulties with animations in the user interface (see
> examples, see the example of Alessandro under 2.11.5, Stop/Pause/Resume
> Time-Based Media).
> Thus I propose two things: first, add an SC or modify an existing SC to
> require allowing the user to prevent animation in the user agent user
> interface; and second, add an example to at least one existing SC that
> would describe the impact on a user with a vestibular disorder.
> As for the new SC, one place it could go would be in Guideline 2.10 (Help
> users avoid flashing that could cause seizures). Because the SC in this
> section are already about the user agent user interface, we could broaden
> its title from just flashing to flashing and animation, e.g. "Guideline
> 2.10, Help users avoid flashing and animation". We could then add an SC
> like the following:
>  2.10.x  Allow avoiding animation: The user can disable any animations
> that are part of the user agent user interface. All information is
> available through means that do not require the use of animation. (Level A)
> Intent of Success Criterion 2.10.x:
> Users with sensory, attentional, cognitive, or vestibular impairments can
> find that animations cause distraction, disorientation, nausea, dizziness
> or vertigo. If the user agent presents any such movies or animated effects,
> it should provide a global setting that allows the user to disable them,
> and doing so should not cause the loss of functionality or information.
> Examples of Success Criteria 2.10.x:
> * Allesandro finds it impossible to ignore visual changes. Unnecessary
> animations make it very difficult for him to read or interact with other
> content on the screen. When he's reading an article on a newspaper website
> and finds an animated icon in the browser's notification area distracting,
> he goes to the browser's settings dialog and chooses the option to disable
> browser animations.
> * Rachel has a vestibular disorder that causes her to experience dizziness
> when she sees certain types of videos or animations. Her web browser
> smoothly scrolls the window every time she presses the pages up or down,
> and this simulated motion can make her dizzy or nauseous, so she adjusts
> the browser's user preference options to turn off smooth scrolling, so that
> the browser effectively redraws the contents of the window each time.
> References:
> * Guideline 2.11 - Provide control of content that may reduce accessibility
> * "Why iOS 7 is making some users sick",
> http://www.theguardian.com/technology/2013/sep/27/ios-7-motion-sickness-nausea
> .
> * Vestibular Disorders Association, https://vestibular.org.
> Add to Examples of Success Criteria 2.11.3 (Execution Toggle):
> * Rachel has a vestibular disorder that causes her to experience dizziness
> when she sees certain types of videos or animations. She wants to order
> theatre tickets, but unfortunately the web site displays an animated
> background that every few seconds slides out the background image and
> slides another into its place, and this animation makes Rachel severely
> uncomfortable. Therefore she clicks a button on the browser's toolbar to
> temporarily disable scripts on this page, which causes the animation to
> stop.
>     Thanks,
>     Greg

Jim Allan, Accessibility Coordinator & Webmaster
Texas School for the Blind and Visually Impaired
1100 W. 45th St., Austin, Texas 78756
voice 512.206.9315    fax: 512.206.9264  http://www.tsbvi.edu/
"We shape our tools and thereafter our tools shape us." McLuhan, 1964
Received on Tuesday, 1 October 2013 15:34:27 UTC

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