Ok, I think I get what you mean, but not 100%
So you have one card, that allows you access all doors except some specific areas?
Your card also allows you access to a “key press” to access other cards with limited access to those specific areas?
if I am correct in my understanding, you have in your hand an implant that can allow you the same access as your issued key card has (as long as it is compatible with the hotel system ) but regardless, it can only be a replacement for ONE card.
The next big thing is, do you know if your xNT is compatible with your work system?
if so, let’s call your xNT Unique ID (UID) 12345
and your issued access card UID 09876
If your manager is willing to enroll your xNT, they would remove 09876 from your access profile and they would replace it with xNT 12345. (actually scan your xNT into the system)
When you actually leave that company, rather than handing back your key card, because you already have, they delete your profile and your access with it.
You then start your new job with you xNT 12345 still in your hand.
I hope this makes sense.
if not, just ask.
The more information you can provide the easier it will be to help.