I first thought it was a camera but there was no point, After some searching I found that these things could communicate optical, so that might be it, if so how do they work?
I first thought it was a camera but there was no point, After some searching I found that these things could communicate optical, so that might be it, if so how do they work?
It looks like an infrared receiver.
The general principle of these tags is explained in the Wikipedia article about electronic shelf labels.
You have shown us a Pricer label.
FYI your account is labeled as a bot in your settings, which may make your comments and posts invisible to users who choose to hide bots.
Good bot
Very smart bot, almost seems like a human
And yet labelled as a bot.
Perhaps we need an infrared thingy to change their label?
“Everyone on Lemmy is a bot except you”