For years, the promise of affordable LED light bulbs has inched closer. But it's remained out of reach--until now. General-purpose LEDs from Cree and Philips are hitting the market at under $10, a ...
Equipped with a bright LED, Farsens' Photon RFID tag operates as a convenient UHF RF field detector tag. Whenever the tag comes close to an RF field source, it harvests energy from the RF field and ...
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