In a method of operating an authentication server, where the authentication server operatively coupled to a network, a request to determine whether a person is allowed to play a game on a gaming system may be received from a computer via the network. The request may include biometric data associated...http://www.google.co.uk/patents/US20040192438?utm_source=gb-gplus-sharePatent US20040192438 - Method and apparatus for limiting access to games using biometric data
