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Revised understanding texts for 2.6 and 2.5.1, call for help regarding SC passes for 2.6.1 Motion Actuation

From: Detlev Fischer (TK) <detlev.fischer@testkreis.de>
Date: Tue, 13 Feb 2018 17:40:25 +0100
To: Kathleen Wahlbin <kathy@interactiveaccessibility.com>, Kim Patch <kim@redstartsystems.com>, public-mobile-a11y-tf@w3.org
Message-ID: <49f6eb84-067b-52dd-9e45-996517e2470c@testkreis.de>
Hi,

I have updated the Understanding text for Pointer Gestures

https://rawgit.com/w3c/wcag21/pointer-gestures/understanding/21/pointer-gestures.html

...and the Understanding for Guideline 2.6 Additional sensor inputs (do 
we really want the 'additional'?)

https://rawgit.com/w3c/wcag21/additional-sensor-inputs/understanding/21/additional-sensor-inputs.html

I have also added three successful implementations for 2.5.1 Pointer 
gestures (videos of interaction)

https://www.w3.org/WAI/GL/wiki/WCAG_2.1_Implementations

and also some cases where content fails.

I am really struggling to find explict implementations of SC 2.6.1 
Motion Actuation (fallback for things like shake-to-undo). In a sense, 
any and all content that accepts user input and can be undone by shaking 
the phone (iOS only - OR requiring the rooting of Android devices to 
implement similar functionality as far as I am aware of). So on iOS, 
nearly any web site would meet the SC. I am not sure though that this 
would count as successful implementation of SC 2.6.1. Searching for web 
sites making use of sensorĀ  input shows more (some even quite dated) 
examples of what is techically possible than actual implementations. I 
call for help on twitter has not resulted in any examples. Will this SC 
in th eend be dropped simply because we cannot find implementations?

As to SC 2.5.2 Pointer Cancellation, I fail to find cases where input is 
cancelled by explicit "Abort or Undo" or "Up Reversal". Examples of 
"Abort or Undo" may be drag-and-drop implementations where releasing the 
pointer with the moved element outside the drop target undoes the 
action. It is not eayy though to find implementations of drag-and-drop 
in web sites - please let me know if you have good examples. For the 
first option, No down event, examples abound , so we could take any site.

Best,

Detlev

-- 
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Detlev Fischer PhD
Testkreis
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Received on Tuesday, 13 February 2018 16:47:01 UTC

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