Polychronis Ypodimatopoulos

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We leverage the ubiquity of bluetooth-enabled devices and propose a decentralized, web-based architecture that allows users to share their location by following each other in the style of Twitter. We demonstrate a prototype that operates in a large building which generates a dataset of detected bluetooth devices at a rate of ~30 new devices per day,(More)
Most organizations have a wealth of knowledge about themselves available online, but little for a visitor to interact with on-site. At the MIT Media Lab, we have designed and deployed a novel intelligent signage system, the Glass Infrastructure (GI) that enables small groups of users to physically interact with this data and to discover the latent(More)
—Given a mobile mesh network, we attempt to address the question of which nodes are accessible at any point in time through some path from a given node. From the viewpoint of some node in the mesh network, we claim that it is impossible to deterministically infer which other nodes are still accessible through some path from the current node. By formulating(More)
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