I've recently begun learning about Cyber Security related to Bluetooth. I toggled the "Show Bluetooth devices without names" (or something similar) in my phone in developer mode and went to the supermarket. I detected tens of previously undetectable Bluetooth MAC addresses. When I looked them up online in sites such as this one I couldn't find a single one, except for the headphone icon. My questions are:
- Is this normal? What are the most likely devices for these addresses?
- I thought that perhaps certain devices such as fridges, might have bluetooth connections. However, wouldn't the vendor be shown in mac finder pages?
- When I went to a quieter area of the supermarket, the number of addresses dropped significantly. Would this mean that: A) Everyone (or at least a lot) of supermarket customers are using a mac address changer in their devices, and B) keeping Bluetooth on at all times?