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With the fast development of wireless sensor networks and context-aware systems, ubiquitous sensor networks (USN) is expected to play a very important role in near future. Businesses with USN and technologies for USN, however, are still far from mature. We address issues concerning technology development, environment creation, and service model for the businesses using USN. We propose a USN business platform composed of three parts that are in charge of communication, information management, and applications, respectively. The platform composed of sensor cells and a managed wireless mesh network will be able to create new USN domains logically separated from but cooperative with Web domains on the current Internet, providing novel, context-aware, interactive services to users with the use of information from sensors deployed across heterogeneous networks. We present our ideas on approaches for making USN businesses and services available, and we suggest that government should support large-scale, long-term experimental service operation with the use of a comprehensive prototype system that can provide test applications to the public.