Re: Re: web-security technologies, CAPTCHA, v1


I would also add that they have trouble with literacy (such as spelling out a vocalized word) and numeracy.

The problem is sometimes more or different cognitive skills are needed to reach the content then to use the content. has a current proposal from the task force.
" Included biometrics for capture and security with a choice/options of what biometrics to use as not each biometric is doable by everyone. "

One can also generalize to say, provide choice/options that can be used by people with different disabilities including cognitive disabilities. 

All the best

Lisa Seeman

Athena ICT Accessibility Projects 
LinkedIn, Twitter

---- On Tue, 02 Sep 2014 14:47:41 +0300 Debra Ruh Global <> wrote ---- 

Good addition Neil. John like your text. Thanks for being so active and helpful to our group. 

Debra Ruh, Ruh Global Communications
Global Disability Inclusion Strategist and Marketing
G3ict Employability & Technology Chair(804) 749-3565 (o)
(804) 986-4500 (c)

Follow Me on twitter,linked-in, facebook,pinterest, tumblr, Google+
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On Sep 2, 2014, at 4:16 AM, "Milliken, Neil" <> wrote:

  Hi John thanks for this.
 Can you add that people may not be able to complete CAPTCHAs correctly due to sequencing problems causing them to input the characters in incorrect order. ( I know this from bitter and repeated experience).
  Kind regards,
 Neil Milliken
 Head of Accessibility & Digital Inclusion
 M: 07812325386
   From: Rochford, John [] 
 Sent: Monday, September 01, 2014 6:53 PM
 Subject: web-security technologies, CAPTCHA, v1
 Hi All,
 As you may know, I agreed to review web-security technologies. I chose to begin with CAPTCHA. My first draft is below. The format I am using is the one I intend to use for future reviews. All the text is my own.
 I welcome your feedback, additions, and/or revisions.
 CAPTCHA is typically a website widget that prevents automated programs from submitting a web form intended for humans by requiring humans to pass a test. Such tests present distorted text visually and/or aurally; and require the form-submitter to enter that text into a field, and invoke a submit button.
 CAPTCHA often blocks people with physical and cognitive disabilities who cannot discern the text they are required to enter and submit. The scope of the problem is vast because, for example, people with disabilities are prevented from purchasing goods and registering for services on millions of websites.
 People with Cognitive Disabilities May Not Be Able to:
 ·     read CAPTCHA text at all because of the intentional distortion of it
 ·     comprehend text that can’t be enlarged without additional distortion
 ·     have the advantage of comprehending the meaning of words or images
 ·     understand text spoken in a computerized and distorted voice
 ·     complete the multi-step procedure for submitting the CAPTCHA text
 ·     complete a timed CAPTCHA due to slowness in completing all steps 
 ·     understand the purpose of buttons such as reset, listen, and help
 ·     recognize functional elements, such as buttons, are clickable
 ·     focus due to irrelevant instructions such as “stop spam” and “read books”
 ·     become accustomed to CAPTCHA because there are multiple versions of it
 ·     Inaccessibility of CAPTCHA: Alternatives to Visual Turing Tests on the Web, World Wide Web Consortium, November, 2005. 
 ·     A Sliding Alternative to CAPTCHA?, L. Wroblewski, June, 2010.
 ·     sweetCaptcha: Fun and Human Friendly Captcha
 John Rochford
 UMass Medical School/E.K. Shriver Center
 Director, INDEX Program
 Instructor, Family Medicine & Community Health
 Twitter: @ClearHelper
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Received on Tuesday, 2 September 2014 16:45:18 UTC