Wireless Devices That Need No Battery

We might be one step closer to an Internet-of-things reality. University of Washington engineers have created a new wireless communication system that allows devices to interact with each other without relying on batteries or wires for power. The devices use RF signals which are basically TV signals for most part and the devices can then use the signal as power and as a communication medium. Having said that, I am now wondering if the “electricity from thin air” can be applied to this.


Thanks Edwin for the tip !

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