looks to be both a guard npc spawner which have keys with uses for a set linked door. you spawn the "guardSpawner" item and then d-click on it, configure the props and type in an npc to spawn which will hold the keys for the door. Pretty neat self contained system. all this could be done with xmlspawners also just more setup.
13567
 
I remember this script and still have it, was used in the past for a dung where they needed the key to advance. I also added weight to the key so it won't be stolen off the mob :)
* Written by David Runuo
 

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