How does this website - stackoverflow handle the user authentication?

Question

Hi all

I am wondering how does this website - stackoverflow handle the user authentication? It accept yahoo, google, facebook, myspace, openID etc to login. And most importantly with asp.net.

I want to build something like this too. Could something could provide some reading to start with?

Bryan

Answer 1

It's called openID and there are tons of plugins using it that you can embed in your framework/language. This should help you get started:

http://www.google.com/search?hl=en&q=openid+authentication

How it works: http://stackoverflow.com/questions/353880/how-does-openid-authentication-work