3 ms·

As the other commenter said, this seems to only be for very short range communication. The article itself compares it primarily to RFID. I'm skeptical that ext

As the other commenter said, this seems to only be for very short range communication. The article itself compares it primarily to RFID. I'm skeptical that extracting power from ambient RF will scale because there's not that much power _bt design_. Commercial equipment that emits any radiation needs to hit power specs and those regulations are very serious.

dougmwne 5y ago
That's a bogus comparison in my opinion. Passive RFID is nothing but a digital QR code that can be read with RF. It has no more than a meter of range. It's not what we would call a computer in any sense of the word. These Wiliot tags fit the definition of a computer. They have a 1mhz arm CPU, 2kb RAM, 64kb ROM, GPIO inputs & outputs and sensors. They can harvest cellular RF energy and put out a Bluetooth LE ping that can be read from 20 meters. The specs are quite similar to my first computer, the Apple 2E. They are based on a 40nm process, so imagine a 4nm version or a 400 angstrom version. We are not going to be using battery-less phones, but these kinds of energy harvesting IOT chips have a lot of interesting future applications. Shoes that give fitness data to your phone? Sunglasses that give you UV alerts? Detergent that gives you a notification when it's low? Egg salad that that texts you when you forget it on the counter? Ketchup that emails you when it's expired? Just some silly examples, but no more silly than half the IOT that's already out there. https://support.wiliot.com/hc/en-us/articles/360059009614-Wiliot-Extended-Overview https://support.wiliot.com/hc/en-us/articles/360059009614-Wi...