void main()
{
 object o = OBJECT_SELF;
 object oPC = GetLastOpenedBy();
 int n = GetLocalInt(o, "IN_USE");
 //If the device is in use, then prevent anyone from using it other than
 //the original person with the item in there!
 if(n==1)
 {
  if(GetLocalInt(oPC, "ITEM_USER")!=1)
  {
   AssignCommand(oPC, ClearAllActions());
   AssignCommand(oPC, ActionMoveAwayFromObject(o, TRUE, 10.0f));
   FloatingTextStringOnCreature("You may not use this device at this time!", oPC, TRUE);
  }
 }
}