Updated "Inaccessibility of CAPTCHA" Note Published

Today the Accessible Platform Architectures (APA)[1] Working Group, with
the assistance of its Research Questions Task Force (RQTF)[2], has
published: "Inaccessibility of CAPTCHA,"  as a W3C Note:


First published in 2005  today's 2.0 publication extensively updates the
earlier version to bring our analysis and recommendations up to date
with CAPTCHA practice today.

CAPTCHA technologies covered in today's publication include:

*	Traditional visual and audio CAPTCHA, including CAPTCHA games
*	and logic puzzles as practiced today.
*	reCAPTCHA v2 and v3
*	Blinded verification tokens
*	Honeypots
*	Biometrics
*	Proof of Work
*	Heuristics, PKI certificates, and much more.

Today's publication is the culmination of almost two years of extensive
research, discussion, writing, and editing by APA's Research Questions
Task Force (RQTF). The document is extensively
documented with references to research publications and numerous on line
resources. Comments received in response to three separate wide public review draft publications aided our work immensely.

We thank the community for your invaluable input over the past two years.
Your comments have helped us improve our analysis of the state of the
art in telling human users apart from their robotic impersonators. Your
comments have significantly aided our work on this updated Note. We
truly could not have done this without your help.

While today's publication closes our current work on the topic of the
inaccessibility of CAPTCHA, future updates are certainly likely.
Therefore we continue to welcome comments and suggestions.

To comment, please file an issue in the W3C apa GitHub repository[3]. If this is
not feasible, please send email to public-apa@w3.org (comment archive[4]).

Janina Sajka, Chair
Accessible Platform Architectures (APA) Working Group

[1] http://www.w3.org/wai/apa/
[2] https://www.w3.org/WAI/APA/task-forces/research-questions/
[3] https://github.com/w3c/apa/issues/new
[4] http://lists.w3.org/Archives/Public/public-apa/


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, 23 August 2019 22:45:41 UTC