At correctional facilities, the environment is highly structured to ensure that security, safety and order can be maintained. Security procedures are clearly defined and include among others, head counts, inmate movement tracking, visitor logs and cell inspections. Among the most closely guarded and stringent policies and procedures is key control. In fact, many states have implemented policies stating that each facility shall have a system for key control that includes (1) the absolute control of keys by staff; (2) key issuance records; and (3) a system which ensures that missing keys are immediately identified.