this post was submitted on 02 Sep 2023
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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
Thatβs 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