An extended authorization system and method implementing a second layer of access authorization. The first layer of access authorization corresponds to conventional access authorization processing such as, for example, validating an entered user identifier and password. The second layer of access authorization...http://www.google.es/patents/US20030018915?utm_source=gb-gplus-sharePatente US20030018915 - Method and system for user authentication and authorization of services
Method and system for user authentication and authorization of services
