Distributed RFID Tag Storage Infrastructures

We leverage 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. We propose 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. We also describe assurance in our system. We motivate D-RFID stores through examples and describe potential avenues of research.