I like this approach specifically because it doesn't have to replace the traditional sign-in process. A BrowserID sign-in button can be added to a traditional s

I like this approach specifically because it doesn't have to replace the traditional sign-in process. A BrowserID sign-in button can be added to a traditional sign-in form without any fuss, and users can either use it or ignore it. And if the BrowserID sign-in is broken, then no worries, the traditional sign-in form works anyway.