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Researchers from MIT, Harvard, University of Washington and Duke University work together to develop solutions with battery-free sensors to be used as a source of data for Internet of Things.

The solutions includes Farsens’s battery-free tags (Hydro for soil moisture monitoring) and data collection is managed via RFID reader equipped drones. The classic short-range communication issue is this way addressed by the reader capability to move autonomously.

IEEE Spectrum article

Complete paper