It will probably be wifi and mqtt. You don’t need a whole OS to get mqtt, just a TCP/IP stack.
Comment on Dynamic pricing could be coming to your local supermarket
phx@lemmy.world 23 hours ago
What’s the common way for updating these? I have some similar devices that use Wi-Fi but local stores seem to use some sort of nearby transmitter pointex towards the shelves, maybe infrared/optical
Agent641@lemmy.world 17 hours ago
Tollana1234567@lemmy.today 19 hours ago
probably they set certain times of day where there will be surge pricing, like around 12-1pm where more people come in for lunch, and around 4-5pmish where people off work.
GenosseFlosse@feddit.org 7 hours ago
They seem to use infrared and or NFC for data exchange. I tried to read the NFC data with a phone app, however the data seems to be either encrypted, or it was some sort of image blob file that is shown on the display. You can read something, but it’s not as trivial as reading other NFC tags.