RE: Decentralized Identifiers and A11y

The report states that the JSON document associated with the identifier may contain public keys or data used by privacy-preserving biometrics protocols, allowing interaction with the subject of the identifier.

Those protocols are outside the scope of this specification, but it would be useful to know what they might be, and what their capabilities are.

-----Original Message-----
From: Janina Sajka <>
Sent: Friday, August 23, 2019 8:42 AM
To: W3C WAI Accessible Platform Architectures <>;
Subject: Decentralized Identifiers and A11y


A brief followup to our APA conversation about Decentralized Identifiers and their potential to replace CAPTCHA. The current spec draft is here:;;sdata=ehcuIwnbBZTS7DUtVeW8U92NMfdZ0KnBSoOYYTAw4vE%3D&amp;reserved=0

The following statement drew my attention: "Portions of the work on this specification have been funded by the United States Department of Homeland Security's Science and Technology Directorate under contracts
HSHQDC-16-R00012-H-SB2016-1-002 and HSHQDC-17-C-00019."

While I am no attorney I do understand the U.S. funding would bring this technology development under the provisions of Sec. 508[1], i.e. the technology developed needs to be accessible and support accessibility.

We'll try to learn more about the potential this may (or may not) have to help kill interactive CAPTCHA during TPAC.





Janina Sajka

Linux Foundation Fellow
Executive Chair, Accessibility Workgroup:;;sdata=VD6Sdzq%2Fy08q4orndhj0ThXMExFqn9CsDn0waTSuGmg%3D&amp;reserved=0

The World Wide Web Consortium (W3C), Web Accessibility Initiative (WAI)
Chair, Accessible Platform Architectures;;sdata=IBwHqZM1Ed7gEflT8EjLLCQPymIE4TdvufU4wg2OTUc%3D&amp;reserved=0


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Received on Friday, 23 August 2019 13:00:51 UTC