https://hackaday.com/2017/05/04/ultrasonic-tracking-beacons https://www.theatlan...

		imglorp on Oct 1, 2021 \| parent \| context \| favorite \| on: Always-on Processor magic: How Find My works while... https://hackaday.com/2017/05/04/ultrasonic-tracking-beacons https://www.theatlantic.com/technology/archive/2015/11/your-... https://www.wired.com/2017/05/hundreds-apps-can-listen-beaco...

Thanks!