Battery-free sensor tag gathers energy from radio frequencies
January 15, 2019
Sensors play a crucial role in the Internet of Things, but there's one glaring limitation: they need a battery or some other conspicuous power source to run. Soon, however, they might only have to pluck energy from the air. Wiliot has shown off a B…
Source: Engadget | Battery-free sensor tag gathers energy from radio frequencies
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