Why are there loads of unnamed bluetooth devices around me?
I live in a big city in the center. When i activate "Show bluetooth devices without names" in the developer settings of my android 13 phone, there appear loads of this devices. I have no clue what they are. Does anyone know? Are that the bluetooth nanobots of the vaxxinated people? (/s to last question!)
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Our Aldi now has electronic price tags for each product in the centre aisles. I wonder if they're Bluetooth.
I have an idea, there are some restaurants around, maybe its these restaurant pagers.
It varies. Some of them use Bluetooth Low Energy, some of them use other wireless techniques for lower power and greater range.
They're usually e-ink displays that get their power from NFC, so they're probably not Bluetooth
That’s not correct. They run on coin cells and use their own RF protocol. Most use something like zigbee. Others even use light to transfer data.
Usually they use something (but not exactly) zigbee