1. A method for superimposing prespecified locational, environmental, and contextual controls on user interactions, including interactions of mobile users, with computational resources of a distributed computer system for performing a multiplicity of operations and with processes running on equipment residing on said system, each device of the distributed computer system having a location and at least one allowable operation, the method comprising the steps of: registering interaction policies, including user specified interaction policies, on an identifiable address path; registering user and equipment locations, including dynamically updated indications of the locations of mobile users; registering interaction requests, each interaction request including a requested operation; identifying locational and contextual attributes of each of said interaction requests by reference to contextual information, including registered locations; for each interaction request, identifying a device having locational attributes consistent with the locational attributes of the interaction request and an allowable operation consistent with the requested operation of the interaction request; granting interaction requests that have locational and contextual attributes that are consistent with said interaction policies and for which a device has been identified whose allowable operation is consistent with the requested operation; and denying interaction requests that have locational or contextual attributes that are inconsistent with said interaction policies.