The present invention describes a method for superimposing prespecified locational, environmental, and contextual controls on user interactions, including interactions of mobile users, with computational resources. A system is described for electronically monitoring contextual information concerning...http://www.google.com.au/patents/US5544321?utm_source=gb-gplus-sharePatent US5544321 - System for granting ownership of device by user based on requested level of ownership, present state of the device, and the context of the device
