A MAC address is usually all your router gives you about a device: twelve hex digits like a4:cf:12:9b:00:01 , maybe with a half-usable name next to it. The good news: those digits carry more information than they look like. The bad news is that they stop well short of "this is Lisa's tablet".
Source: [Dev.to](https://dev.to/deviceshelf/how-to-find-a-device-by-its-mac-address-34d0)