Android has something similar (Nearby Notifications), which AFAIK uses BLE beacons (Eddystone). I saw one once at a nearby shopping mall, when I turned on Bluet

Android has something similar (Nearby Notifications), which AFAIK uses BLE beacons (Eddystone). I saw one once at a nearby shopping mall, when I turned on Bluetooth just to see what's there (I normally keep Bluetooth disabled).