Locks are the most acceptable and widely used security devices for protecting facilities, materials and property. All containers, rooms, and facilities must be locked when not in actual use. Regardless of their quality or cost, locks are considered delay devices only. Some locks require time and expert manipulation to open, but all locks can be defeated by force and with the proper tools. Locks must never be considered as a stand-alone method of security.
The systematic control of locks and keys is one of the most important components of any security program. Without proper key control, locks provide little deterrence to illegal or unauthorized entry into a facility.
The National Park Service recommends the fewer the keys there are, the better:
For additional security guidelines provided by the National Park Service, click here.