I know this is kind of old news, but I missed it somehow. I haven’t played with it yet. I just downloaded the new Firefox 18.104.22.168 release, so I will download the add-on and see how it works.
December 13th, 2006
A new plug-in providing Firefox support for Microsoft’s CardSpace digital-identity framework is now available for public download.
Solution architect Kevin Miller, who played an instrumental role in developing the technology, announced the availability of his Firefox add-on for Windows via his blog.
Why is Firefox support important? Until there is more third-party support for Microsoft’s CardSpace, it will be slow to gain traction. But until CardSpace gains more traction, developers will be reluctant to build applications that make use of it. CardSpace, the technology formerly known as InfoCard, is a key piece of Microsoft’s proposed Internet-wide identity metasystem.