A secure distributed single-login authentication system comprises a client and a server. The client collects a user name and password from a user and tests that user name and password at a variety of potential authentication servers to check where the login is valid. It combines the password with a time...http://www.google.fr/patents/US7228417?utm_source=gb-gplus-shareBrevet US7228417 - Simple secure login with multiple-authentication providers
Simple secure login with multiple-authentication providers
