Methods and system for controlling access to viewable content on an individual title basis. In one embodiment, the method enables a user, such as a parent, to assign passwords to individual titles, thereby preventing unauthorized users, such as children, from viewing content corresponding to a selected...http://www.google.de/patents/US20030014750?utm_source=gb-gplus-sharePatent US20030014750 - Methods and system for controlling access to individual titles
