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This paper leverages increasing passive RFID tag memory to propose distributed RFID tag storage infrastructures (D-RFID stores). A D-RFID store is a large set of tags with significantly sized re-writeable storage. Interrogators interact with D-RFID stores by reading from and writing to tags, providing a wide range of possible applications that are otherwise resource-inefficient. Examples include tagging trees in a forest to track hikers, interactive smart posters to provide location-based social interaction and collaboration, and tags transporting digital information in situations where reliable network connectivity is not available. The paper proposes a system architecture for D-RFID stores by describing the tag distribution in space and time, different storage structures, and the middleware linking the different components together.
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