Automated proximity notification

摘要: The disclosed system and method for automated proximity determination notification is useful to enable a customer or client of business other enterprise (e.g. public library, government facility, etc) automatically obtain predetermined service, on arrival at destination associated with the enterprise, without having communicate orally representatives business/enterprise. A portable programmable wireless communication device carried by users such services. device, termed PLAD (pervasive location aware device), receives program parameters each be visited, when service reserved relative destination. Thereafter, as its user travels destinations, activated uses information acquired in reservation process perform transmission characteristic this invention reaches range For that purpose, calculates distance currently valid which reserved, sends signal an address respective less than threshold radius limit during process. Receiving equipment arrange prompt execution arrives also can used reverse context—when specific being delivered vehicle carrying another operated business/enterprise—to alert imminent vehicle.