This contribution describes Sensorium, our framework for accessing sensor values on computing devices and making them available to other applications. Meanwhile, it allows users control the exposure of privacy-related data. Our goal is to bring the sensing capabilities of modern devices to a broader range of reseachers and experimenters via an open source framework. We also present a real application making use of Sensorim’s virtues: For our web service Open3GMap, we crowd-source radio reception quality measurements in 3G networks. We combine the data into an open geo-information system.

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