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W3C WAI CAPTCHA Note third draft now online

The formalising of advice by W3C WAI regarding the the inaccessibility of CAPTCHA has now published its third draft as it draws closer to becoming a formal advisory note.

The update, which I’ve been involved in, follows on from the original CAPTCHA draft at which point it was announced that:  

“The Accessible Platform Architectures Working Group has published a Working Draft of a revision to Inaccessibility of CAPTCHA at: https://www.w3.org/TR/turingtest/ Inaccessibility of CAPTCHA has been a Working Group Note since 2005. It describes problems with common approaches to distinguish human users of web sites from robots, and examines a number of potential solutions. Since the last publication, the abilities of robots to defeat CAPTCHAs has increased, and new technologies to authenticate human users have come available. This update brings the document up to date with these new realities. It is published as Working Draft to gather public review, after which it is expected to be republished as a Working Group Note.”

This latest version of the draft includes a general restructure of the Note, new guidance relating to Google reCAPTCHA and new guidance on CAPTCHA as it relates to security authentication and biometrics.

As an invited expert for the W3C WAI APA Research Questions Task Force (RQTF), it’s been a privilege to work with Janina, Michael and Jason on updating the note alongside the hard work of all the RQTF members.  As the Note continues to be refined ready for publication it remains a great experience to be involved in the process.

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