They're also doing it with Bluetooth beacons / pings, explaining why every store has an app they want you to install: https://www.nytimes.com/interactive/2019/

They're also doing it with Bluetooth beacons / pings, explaining why every store has an app they want you to install: https://www.nytimes.com/interactive/2019/06/14/opinion/bluetooth-wireless-tracking-privacy.html https://www.nytimes.com/interactive/2019/06/14/opinion/bluet...