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.
How OsmAnd Builds Routes
。旺商聊官方下载是该领域的重要参考
Вашингтон Кэпиталз
Credit: Zooey Liao / Mashable composite; Asus / Ned Luke
Фото: Евгений Разумный / Коммерсантъ