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submitted 1 year ago by PixeIOrange@feddit.de to c/asklemmy@lemmy.ml

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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[-] I_Miss_Daniel@kbin.social 31 points 1 year ago

Our Aldi now has electronic price tags for each product in the centre aisles. I wonder if they're Bluetooth.

[-] PixeIOrange@feddit.de 10 points 1 year ago

I have an idea, there are some restaurants around, maybe its these restaurant pagers.

[-] YodaDaCoda@sh.itjust.works 9 points 1 year ago

It varies. Some of them use Bluetooth Low Energy, some of them use other wireless techniques for lower power and greater range.

[-] EddoWagt@feddit.nl 8 points 1 year ago

They're usually e-ink displays that get their power from NFC, so they're probably not Bluetooth

[-] B0rax@feddit.de 3 points 1 year ago

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.

[-] B0rax@feddit.de 1 points 1 year ago

Usually they use something (but not exactly) zigbee

this post was submitted on 02 Sep 2023
251 points (92.5% liked)

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