Colm Gorey: Battery-free IoT chip claims to harvest energy from thin air

This week in IoT, a new chip claims to be able to power itself solely off the deluge of radio signals surrounding us.

If you hear about a device that can be powered passively just by the air around it, you might be (rightly) sceptical. However, according to The Verge, a start-up going by the name of Wiliot seems to be on to something with a new super-thin Bluetooth chip that it promises could revolutionise the internet of things (IoT).

Smaller than a credit card, the battery-free chip supposedly harvests its energy from the ambient radio frequencies that surround us constantly, such as Wi-Fi signals and our own mobile phones.

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