Inaccessibility of CAPTCHA - W3C Note Update Published

Inaccessibility of CAPTCHA - Alternatives to Visual Turing Tests on the Web is published as an updated W3C Working Group Note. (CAPTCHA stands for Completely Automated Public Turing Test to Tell Computers and Humans Apart.) The Note examines potential solutions to test that users are human, not software robots, in a way that is accessible to people with disabilities. A summary, some background, and thanks to contributors is in a 23 August e-mail.