| http://www.w3.org/ns/prov#value | - 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.com/patents/US7954121?utm_source=gb-gplus-sharePatent US7954121 - Methods and system for controlling access to individual titlesAdvanced Patent SearchPublication number
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