Download the Microsoft .NET Passport 2.5 Software Development Kit (SDK), which includes Microsoft .NET Passport, a suite of Web-based services that helps make signing in to Web sites faster and easier. Also, DirectX 9.0 SDK Update (Summer 2003) – RC0 was released to beta testers.
Sure this would be useful if I had 10,000 a year to cough up to use .Net Passport for my site.
As Technical Architect at a very large well know American company I have strictly forbidden the use of Passport. It is nothing more than a way for Microsoft to control business and conusmer users. On top of all that it is very unreliable. Not to mention that I don’t want Microsoft to have my name or the names of other people in the company.