Worth Reading: Using DNS as a Single Signon

Internet-wide identity management is one of the hot issues currently — dealing with hundreds of separate usernames and passwords is insecure and unfriendly for users. Increasingly, people use their social network accounts to log into websites, which works well, but forces you to allow either Google or Facebook to track all your logins — you don’t have a lot of choice. —Vittorio Bertola @APNIC