He can open it only once per 2m.
and the problem is? I dont get it...
example:
Someone follow you to your base, lock your door "just for teh lulz" and depart... you realize, that you are fucked up and need to hire some picklocker, who will open the doors... so you find one, he opens your doors with new key... or give lockpickers possibility to remove the lock completely...
where is the problem with cooldown?