According to the docs, beacons should be identified by their UUID. But for every Reagion creation and ranging listener set up, there is one specific UUID in Region instanciation constructor. So for 10 beacons with different UUIDs do I have to create 10 Regions and 10 ranging listeners? I wanted to ask weather I can identify beacons by their MAC address, if it is a unique sequence. Im using Android SDK. Thank you.