Grymm
8
Can’t really understand why you want to track players’ MAC numbers?
But, if it’s to If you’re already modded, then add the PIPPI mod to the top of your list. You will be able to see all non-Data Protected player data and be able to remove any player accounts or builds, etc. And yes, if the player is deleted and tries again, PIPPI will show the same ID.
PIPPI allows you to kick, delete, remove all structures of any player, whether they are logged in or not. Usually players just knowing PIPPI’s running front and centre is enough of a deterrent to messing about. 
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