US Patent 7631089 System for device-access policy enforcement

Embodiments of the invention include an access policy enforcement system for a system that provides services to other devices. As a service-providing device changes environments, or mobile states, access to the device's services is automatically and transparently limited or expanded. One aspect of the access policy determines the particular state in which the service-providing device is operating. Another aspect uses the determined state to dictate which services will be available to other devices.