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2 years agoMQTT isn’t peer-to-peer, it requires a centralized broker that all devices connect to.
If OP were looking at network protocols, CoAP would be the right option, but it looks like they don’t even want to bother with IP.
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Cake day: June 18th, 2023
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The command you’re looking for is
lsusb. There’s going to be a lot in there, but for a security token like that, you’re probably looking for something that says “yibikey”, “Fido”, or “u2f”.