W3C home > Mailing lists > Public > public-rqtf@w3.org > June 2019

Re: CAPTCHA advice in WCAG

From: Janina Sajka <janina@rednote.net>
Date: Fri, 7 Jun 2019 09:28:02 -0400
To: "White, Jason J" <jjwhite@ets.org>
Cc: Scott Hollier <scott@hollier.info>, "public-rqtf@w3.org" <public-rqtf@w3.org>
Message-ID: <20190607132802.GJ2843@rednote.net>
I agree with Jason's comments below and with Scott's suggestion to ask
WCAG to revise their guidance to say more.

I would add only one thing. I think the existing guidance should be more
blunt. The alt for a CAPTCHA should clearly say that it is a CAPTCHA. At
the moment we have obscure implication suggesting that inference. I
don't understand the need for indirection, except perhaps for the fact
that the term itself is unfamiliar--as our document also acknowledges.

Well, to my mind indirection doesn't make an unfamiliar term more
approachable. It just reinforces ignorance.

Jason, if we indeed go to 2nd wide review next week as it still seems we
will, I suggest an RQTF topic might be a specific set of recommendations
to AGWG along the lines described in your post. I think APA would run a
CfC on RQTF's recommendation, then we can formally communicate this to
AGWG.

Janina

White, Jason J writes:
> I would expect guidance on this topic to be more likely in Silver than in WCAG 2.2, but that's just a prediction derived from experience contributing to WCAG over the years. Sooner would of course be better.
> 
> It also seems to me that there's a general principle emerging from our draft Note: non-interactive security strategies are to be preferred to those requiring interaction from the user. In so far as interaction is required, it should demand as little as possible of the user's sensory, cognitive, and manipulative abilities, consistently with meeting the security objective. The challenge here is that it's a matter of balancing the demands imposed on the user with what is needed to achieve a security goal; and there isn't a single "right answer" to this problem, as we acknowledge.
> 
> This principle doesn't meet the demands for clarity, verifiability, and specificity that need to be met by WCAG success criteria; but it does at least offer a starting point for further development.
> 
> From: Scott Hollier <scott@hollier.info>
> Sent: Friday, June 7, 2019 2:25 AM
> To: public-rqtf@w3.org
> Subject: CAPTCHA advice in WCAG
> 
> To the RQTF
> My connection dropped out just before the end of our meeting on Wednesday, and it was just at the point where there was some discussion from Judy about looking at how CATPCHA guidance could be included in a future WCAG update. In the workshops I run I get asked about CAPTCHA a lot in terms of WCAG and if there is interest in supporting the workflows for a WCAG 2.2 or similar update I'd be happy to get involved if anyone could provide some guidance on how the workflows operate.
> 
> Scott.
> 
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-- 

Janina Sajka

Linux Foundation Fellow
Executive Chair, Accessibility Workgroup:	http://a11y.org

The World Wide Web Consortium (W3C), Web Accessibility Initiative (WAI)
Chair, Accessible Platform Architectures	http://www.w3.org/wai/apa
Received on Friday, 7 June 2019 13:28:31 UTC

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