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In this paper, a platform to manage user-environment interaction is addressed. The core of the methodology consists of a continuous communication between a sensing module hosted on the user and a sensor network distributed in the environment. Such strategy provide the cognitive system with a continuous perception of both the environment and the user. The cognitive system can hence be made aware of user-environment interaction and can provide the user with awareness of the surroundings. A case of study is presented which demonstrates the applicability of such strategy to real orientation aids for the visually impaired.