In this blog post, we propose an authentication scheme using QR codes and Internet-connected smart phones to allow a user to quickly sign into a web site without having to memorize or type in a username and password. The user only has to prove that they are in possession of their mobile phone. We've developed a demonstration app and web site for this approach which you can try if you have an Android smartphone. Or you can watch the video demonstration. We have also started work on a draft REST protocol, and welcome feedback.
Read More at the Galois Blog.