I hate to be a pest and it isn't a real problem but I restarted my node and the next time it connected to server it created a new device for the same node. I just wanted to let you know about it.
It may be because I'm running on dialup and IP may have changed. I think I may have restarted another one and didn't duplicate.
I known that problem.
Currently, the device is identified only by CPU model and Ethernet Card MAC.
Maybe you just add or remove a Ethernet Card, then the server treats it a new device. Anyway, it wouldn't affect your computing.
I'll design a function that can merge devices later soon.