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Re: What is a failure of 1.3.5 Identify Input Purpose?

From: John Foliot <john.foliot@deque.com>
Date: Fri, 25 Jan 2019 11:48:17 -0600
Message-ID: <CAKdCpxxCKDX1xZnNy+cNSzYBhizCue0HpXdxj7msd4P0cL3bYw@mail.gmail.com>
To: David MacDonald <david100@sympatico.ca>
Cc: WCAG <w3c-wai-gl@w3.org>
David writes:


> If there is no AT that can present it to the end user then it is not
accessibility supported and therefore I would not pass it.

What AT?
What AT is required for Captions? For color contrast? For visible Tab
Focus? Text ReFlow?

Not every SC in WCAG is created exclusively for AT David, and this is
indeed one of those SC. How you evaluate WCAG is of course up to you, but
unless or until you can point to an AT that *should* support this SC, but
doesn't, I'd reject that statement as over-reaching and unfounded (sorry
brother). Do we need tooling that leverages the element-level metadata to
make things better for our users? Absolutely! Whether that is "AT" or
something else instead however remains to be seen. Currently, we have *one*
technique for SC 1.3.5 that leverages existing functionality in *some*
browsers, with no AT involved.


> Regarding the example alt text with a written message baked into the
image. I always fail alt text if it is a baked in text intended for the end
user and not incidental text like a street sign.  How can it pass?


Again, I would certainly have a chat with the content creator about that
image and it's alt text (at the same time recognizing the limitations that
Social Media platforms forces upon content creators). *However, the
Normative Text does NOT state that images with burned-in text MUST echo
that text back as part of the alt text. It simply doesn't.*  At best, we
have a (non-normative) Techniques text
<https://www.w3.org/TR/WCAG20-TECHS/H37.html>which states:

*When an image contains words that are important to understanding the
content, the alt text should include those words.  *
[JF - not even a MUST, but rather a SHOULD
<https://www.ietf.org/rfc/rfc2119.txt>... (and yes, I know that WCAG does
not reference RFC 2119, although other W3C Recs do...)]

So... while I agree wholeheartedly that the alt text that Facebook is
auto-generating (as in my previous example) has little real value at a
user-based, functional level, it none-the-less meets the 'legal'
conformance requirements *as prescribed by the normative text in WCAG 2.1:*

All non-text content <https://www.w3.org/TR/WCAG21/#dfn-non-text-content> that
is presented to the user has a text alternative
<https://www.w3.org/TR/WCAG21/#dfn-text-alternative> that serves the
equivalent purpose, except for the situations listed below.


(Question: if the image had a caption which provided that text, would you
still fail it? I argue you are trying to apply a black and white judgement
that is nuanced at the best of times.)

If CanAdapt wants to fail that, you are of course free to do so (based upon
your definition of the undefined and subjective "equivalent purpose" term),
but I will continue to argue your interpretation is from a user-based
perspective, and not a legal-conformance-based perspective. They are not
the same, a point I think we can all agree on.

Personally, I am always truthful and candid: "*It "technically passes" but
it's not very helpful for the intended audience*" is (I assert) the correct
and accurate response. Then I pivot to how to make it better.

JF



On Fri, Jan 25, 2019 at 5:32 AM David MacDonald <david100@sympatico.ca>
wrote:

> > I/we cannot advocate for *failing *a site/page if they used a
> different, standards-based technique (such as Microdata), because we don't
> pass or fail sites based on techniques, but rather whether they have met
> the requirement (functional outcome) of the SC.
>
> If there is no AT that can present it to the end user then it is not
> accessibility supported and therefore I would not pass it.
> Regarding the example alt text with a written message baked into the
> image. I always fail alt text if it is a baked in text intended for the end
> user and not incidental text like a street sign.  How can it pass?
>
>
>
> Cheers,
> David MacDonald
>
>
>
> *Can**Adapt* *Solutions Inc.*
>
> Tel:  613-806-9005
>
> LinkedIn
> <http://www.linkedin.com/in/davidmacdonald100>
>
> twitter.com/davidmacd
>
> GitHub <https://github.com/DavidMacDonald>
>
> www.Can-Adapt.com <http://www.can-adapt.com/>
>
>
>
> *  Adapting the web to all users*
> *            Including those with disabilities*
>
> If you are not the intended recipient, please review our privacy policy
> <http://www.davidmacd.com/disclaimer.html>
>
>
> On Thu, Jan 24, 2019 at 1:43 PM John Foliot <john.foliot@deque.com> wrote:
>
>> David writes:
>>
>> > I also would *not* advocate consensus for a new sufficient technique
>> that doesn't have any current benefit and is purely aspirational until
>> technology comes along to do something with it for the end user
>>
>> Nor would I David (and I don't think anyone is; I'm certainly not), but,
>> by the same token, I/we cannot advocate for *failing *a site/page if
>> they used a different, standards-based technique (such as Microdata),
>> because we don't pass or fail sites based on techniques, but rather whether
>> they have met the requirement (functional outcome) of the SC. And the
>> functional outcome of SC 1.3.5 is clearly stated as:
>>
>> *the purpose of a form input collecting information about the user can
>> be programmatically determined,*
>>
>> Microdata is in use today (and actually more extensively than I
>> originally thought, per Schema.org, Google, Bing and Yandex), and is being
>> used by search engines *BECAUSE* the value of the terms can be
>> programmatically determined by the search engine algorithms. So it fits the
>> definition. (Today, the definition terms for SC 1.3.5 are also - at least
>> many of them - undefined at Schema.org, which is another impediment to the
>> author. But, again, if an organization - Benetech perhaps? - wanted to add
>> the additional terms to the Schema.org taxonomy, then it could then be
>> conformant to the "letter of the law" definition of SC 1.3.5)
>>
>> Additionally, while I've never been a huge fan of Failure Techniques
>> (because we'll never document ALL the ways an author could fail), I'd
>> strongly resist any suggestion or attempt to write a Failure Technique that
>> suggested using Microdata was "a failure".
>>
>> It's just like the following example: <img src="..." alt="picture">
>>
>> Now, you won't get any argument from me that the suggested alt text above
>> is functionally useless to the end user. HOWEVER, you couldn't "fail" a
>> site that had that as the alt text, because SC 1.1.1 simply states that "*All
>> non-text content that is presented to the user has a text alternative that
>> serves the equivalent purpose*" WITHOUT prescribing how valuable or
>> detailed that equivalency must be. Both you and I would "have a chat" with
>> the developer [sic] about 'improving' that alt text (we'd both explain the
>> higher-level value of the SC requirement - i.e. "education"), but the SC
>> calls for a textual equivalent, and there is one provided, so you cannot
>> fail the SC.
>>
>> (I'll also note that this appears to be the "legal-compliance" position
>> of twitter and Facebook today, with their auto-generated alt texts:
>> [image: image.png]
>> [screen capture of an image from Facebook, with the alt-text being
>> exposed on screen. The alt text reads:
>> "Image may contain: 1 person, meme, and text"])
>>
>> Same premise, same argument.
>>
>> JF
>>
>> On Thu, Jan 24, 2019 at 11:57 AM David MacDonald <david100@sympatico.ca>
>> wrote:
>>
>>> Yes the reason this technique got consensus is that it provided "some
>>> value" today, which is laid out in the understanding as making it easier to
>>> fill out fields. The technique relies on browsers that support
>>> autocomplete, so a company could not say "we rely on IE version x for our
>>> conformance statement" if they have form fields collecting info about an
>>> end user.
>>>
>>> I advocated consensus for this SC and the autocomplete technique not
>>> upon its aspirational hope, but on its current benefits. I hope there is
>>> success with this area and support its future.
>>>
>>> I also would *not* advocate consensus for a new sufficient technique
>>> that doesn't have any current benefit and is purely aspirational until
>>> technology comes along to do something with it for the end user, because
>>> that would be in violation of WCAG 2/2.1 accessibility supported normative
>>> requirement.
>>>
>>> Cheers,
>>> David MacDonald
>>>
>>>
>>>
>>> *Can**Adapt* *Solutions Inc.*
>>>
>>> Tel:  613-806-9005
>>>
>>> LinkedIn
>>> <http://www.linkedin.com/in/davidmacdonald100>
>>>
>>> twitter.com/davidmacd
>>>
>>> GitHub <https://github.com/DavidMacDonald>
>>>
>>> www.Can-Adapt.com <http://www.can-adapt.com/>
>>>
>>>
>>>
>>> *  Adapting the web to all users*
>>> *            Including those with disabilities*
>>>
>>> If you are not the intended recipient, please review our privacy policy
>>> <http://www.davidmacd.com/disclaimer.html>
>>>
>>>
>>> On Thu, Jan 24, 2019 at 10:19 AM John Foliot <john.foliot@deque.com>
>>> wrote:
>>>
>>>> *Success Criterion 1.3.5 Identify Input Purpose (Level AA)
>>>> <https://www.w3.org/TR/WCAG21/#identify-input-purpose>: *The purpose
>>>> of each input field collecting information about the user can be
>>>> programmatically determined when:
>>>>
>>>>
>>>>    - The input field serves a purpose identified in the Input Purposes
>>>>          for User Interface Components section; and
>>>>          - The content is implemented using technologies with support
>>>>          for identifying the expected meaning for form input data.
>>>>
>>>> David writes:
>>>>
>>>> > ...with support for identifying the expected meaning for form input
>>>> data. [JF notes that the SC doesn't say "...and then do something with that
>>>> information..."]
>>>>
>>>>
>>>> Patrick writes:
>>>>
>>>> > ...What can be done *without AT* in terms of identifying the purpose
>>>> of the input?
>>>>
>>>>
>>>> From the Understanding document
>>>> <https://www.w3.org/WAI/WCAG21/Understanding/identify-input-purpose.html>
>>>> :
>>>>
>>>> *The intent of this Success Criterion is to ensure that the purpose of
>>>> a form input collecting information about the user can be programmatically
>>>> determined, so that user agents can extract and present this purpose to
>>>> users using different modalities. The ability to programmatically declare
>>>> the specific kind of data expected in a particular field makes filling out
>>>> forms easier, especially for people with cognitive disabilities.*
>>>>
>>>>
>>>> (Which also brings us back to the scoping it to the actual user
>>>> discussion)
>>>>
>>>>    - [Element + machine-readable & parsable metadata] = machine can do
>>>>    something with the metadata based upon the value of the metadata
>>>>    - [<input> + "purpose"] = machine "knows" (or can know) what the
>>>>    purpose of the input is, and can potentially do something with that
>>>>    "knowledge"
>>>>    - [<input> + @autocomplete with fixed token value] = browsers can
>>>>    auto-fill input values based upon which token is specified
>>>>            (2 X independent implementations = exit criteria)
>>>>
>>>> As previously noted however, machines (browsers) *DO NOT* have to
>>>> autofill the inputs for this SC to be conformant, as
>>>>
>>>> a) not all browsers support the 'feature' (looking at you Microsoft),
>>>> and
>>>> b) not all browsers are expected to be storing the corresponding values
>>>> (public terminals, etc.) associated to the end user, and finally
>>>> c) that specific functionality is not part of the SC requirements.
>>>>
>>>> None-the-less, *IF* the author has set the conditions, *THEN* when the
>>>> user-configuration is set accordingly, something happens.
>>>>
>>>> YES, this SC has a lot of aspiration behind it, and minimal support
>>>> today (*one* technique does "something" that benefits the end user),
>>>> because it has been made 'machine-readable' and 'machine understandable'.
>>>> But we have the evidence of the SC meeting it's stated goal, and we've
>>>> cracked the chicken and egg problem by starting to have developers add
>>>> metadata to content at the element level.
>>>>
>>>> Do we want it to do more? Absolutely, but we have to crawl before we
>>>> can sprint, and we had to start somewhere. But just like WCAG CANNOT
>>>> *mandate* the use of, say, @alt to successfully meet SC 1.1.1, here as well
>>>> we cannot mandate the use of @autocomplete to meet this SC; and if an
>>>> organization (and we have a few working in this space today) want to build
>>>> out the larger tool-sets to support another valid and conformant W3C
>>>> technology (like Microdata) to identifying the expected meaning, we
>>>> cannot "forbid" it nor "fail" it, because *we don't fail based upon
>>>> techniques, but on outcomes*.
>>>>
>>>> In the simplest of terms, the functional outcome expected here is that
>>>> inputs are 'tagged' with appropriate metadata so that "the purpose" of the
>>>> input can be unambiguously understood by a machine.
>>>>
>>>> Do we need more tooling? Absolutely! But the fact that we have enough
>>>> robust support from tools "doing something" with the appropriately tagged
>>>> inputs today (and not just browsers BTW, we tested password managers as
>>>> well) because they can "...identify the expected meaning..." and then
>>>> autofill the inputs, was the justification for this SC passing the exit
>>>> criteria. This was discussed at length during the F2F last CSUN, when we
>>>> ran these test sprints.
>>>>
>>>> JF
>>>>
>>>>
>>>> On Wed, Jan 23, 2019 at 8:03 PM David MacDonald <david100@sympatico.ca>
>>>> wrote:
>>>>
>>>>> > What AT is required to support the technique for this SC? Serious
>>>>> question.
>>>>>
>>>>> What can be done without AT in terms of identifying the purpose of the
>>>>> input and doing interesting things with that purpose envisioned by COGA
>>>>> such as inserting icons, swapping out labels, etc. as per the Understanding
>>>>> doc. etc....  ?
>>>>>
>>>>> Cheers,
>>>>> David MacDonald
>>>>>
>>>>>
>>>>>
>>>>> *Can**Adapt* *Solutions Inc.*
>>>>>
>>>>> Tel:  613-806-9005
>>>>>
>>>>> LinkedIn
>>>>> <http://www.linkedin.com/in/davidmacdonald100>
>>>>>
>>>>> twitter.com/davidmacd
>>>>>
>>>>> GitHub <https://github.com/DavidMacDonald>
>>>>>
>>>>> www.Can-Adapt.com <http://www.can-adapt.com/>
>>>>>
>>>>>
>>>>>
>>>>> *  Adapting the web to all users*
>>>>> *            Including those with disabilities*
>>>>>
>>>>> If you are not the intended recipient, please review our privacy
>>>>> policy <http://www.davidmacd.com/disclaimer.html>
>>>>>
>>>>>
>>>>> On Wed, Jan 23, 2019 at 4:57 PM Patrick H. Lauke <
>>>>> redux@splintered.co.uk> wrote:
>>>>>
>>>>>> On 23/01/2019 21:51, John Foliot wrote:
>>>>>> > Hi David,
>>>>>> >
>>>>>> > What AT is required to support the technique for this SC? Serious
>>>>>> question.
>>>>>>
>>>>>> Some AT (or UA, or UA extension) that does something meaningful with
>>>>>> whatever means of adding "purpose" the author chose?
>>>>>>
>>>>>> Probably depends on the exact reading of what "support" really
>>>>>> means/refers to in
>>>>>>
>>>>>> "The content is implemented using technologies with support for
>>>>>> identifying the expected meaning for form input data."
>>>>>>
>>>>>> Support in a theoretical "well, it's exposed programmatically by the
>>>>>> UA"
>>>>>> way, or support in a "and there's some real-world, actually used UA
>>>>>> etc
>>>>>> that does something with it"?
>>>>>>
>>>>>> P
>>>>>> --
>>>>>> Patrick H. Lauke
>>>>>>
>>>>>> www.splintered.co.uk | https://github.com/patrickhlauke
>>>>>> http://flickr.com/photos/redux/ | http://redux.deviantart.com
>>>>>> twitter: @patrick_h_lauke | skype: patrick_h_lauke
>>>>>>
>>>>>>
>>>>
>>>> --
>>>> *​John Foliot* | Principal Accessibility Strategist | W3C AC
>>>> Representative
>>>> Deque Systems - Accessibility for Good
>>>> deque.com
>>>>
>>>>
>>
>> --
>> *​John Foliot* | Principal Accessibility Strategist | W3C AC
>> Representative
>> Deque Systems - Accessibility for Good
>> deque.com
>>
>>

-- 
*​John Foliot* | Principal Accessibility Strategist | W3C AC Representative
Deque Systems - Accessibility for Good
deque.com

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Received on Friday, 25 January 2019 17:49:15 UTC

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