The security of an entity is protected by using passcodes. A passcode device generates a passcode. In an embodiment, the passcode is generated in response to receipt of user information. The passcode is received by another system, which authenticates the passcode by at least generating a passcode from...http://www.google.fr/patents/US7669236?utm_source=gb-gplus-shareBrevet US7669236 - Determining whether to grant access to a passcode protected system
Determining whether to grant access to a passcode protected system
