It's a simple rather heuristic approach. Because BLE uses randomised MAC and the OSSID are not stable, nor the UUID of the service announcements, you can't just scan for the bluetooth beacons. And, to make thinks even more dire, some like Meta, for instance, use proprietary Bluetooth services and UUIDs are not persistent, we can only rely on the communicated device names for now.
Blue: Seen in a closet
，这一点在同城约会中也有详细论述
Шанхайские Драконы，更多细节参见体育直播
Logical_Welder3467
Дания захотела отказать в убежище украинцам призывного возраста09:44