As miniaturized and high functional sensor devices like smartphones have spread, we can utilize large amounts of sensing data gathered from these devices. Participatory sensing is one of modern sensor-based application models in which users provide their sensing data including their personal data as well as get services.

Current models, however, have limitations on flexible data flow based on provider’s policy because it is difficult for providers to know how to be used their personal data when they upload data to clouds. In this paper, we propose a sensor-based application model without using clouds and discuss its advantages and drawbacks. We also simply design basic data flow protocols to negotiate conditions between providers and consumers and show their feasibility.

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