web-security technologies, CAPTCHA, v2

Hi All,

It would be good if you would please reply to this message with any suggestions for items, not included in the list below, of CAPTCHA-related difficulties.
I have added two new items:

*      enter characters in the correct order; and

*      recognize characters if they do not form words, or are shown in different fonts/styles
Attribution: Neil Milliken; and Andrew Arch, W3C Education & Outreach Working Group
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
  *   recognize characters if they do not form words, or are shown in different fonts/styles
  *   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
  *   enter characters in the correct order
  *   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
John

John Rochford
UMass Medical School/E.K. Shriver Center
Director, INDEX Program
Instructor, Family Medicine & Community Health
http://www.DisabilityInfo.org<http://www.disabilityinfo.org/>
Twitter: @ClearHelper