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W3C WAI CAPTCHA Note second draft now online

I’m excited to report that the second working draft of the W3C WAI advice on the inaccessibility of CAPTCHA that I’ve been involved in is now online.

The update follows on from the first updated 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 the increased use of data collected over time to determine the likelihood of a user being a robot or a human.

As an invited expert for the W3C WAI APA Research Questions Task Force (RQTF), it’s been a privilege to work with Janina and Michael 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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