b. Substitution. An IDS can be used in place of other physical security
measures which cannot be used because of safety regulations, operational
requirements, appearance, layout, cost, or other reasons.
c. Augmentation. An IDS provides additional physical security controls at
critical points or areas.
90.2 IDS planning considerations. The following factors need to be
considered to determine the necessity and feasibility of installing an IDS:
Mission of the facility.
Criticality of the facility, or its information, to the mission of the
Vulnerability and accessibility of the facility to human threat.
Geographical location of the facility and the location of the areas to
be protected inside the facility.
Hours of operation.
Existence and availability of other forms of protection.
Initial and recurring cost of the proposed IDS as compared to the cost
(in money or security) of the possible loss of classified material and
Response time of supporting guard forces.
Savings in manpower and money over a period of time.
Intruder-detection time requirement.
90.3 Types of IDS. Many types of IDS exist and each is usually designed to
meet a specific security problem. Point-of-entry, photoelectric, sound,
vibration, motion, and beat detectors are but a few of the IDS components
that can be used to secure a facility. The facility engineer, in cooperation
with the physical security specialist, should determine which system, or
combination of systems, best provides for the security of a planned/'existing
100. Lock and key systems. The lock is the most widely used security device
of the basic safeguards used to protect classified material and equipment.
Regardless of the quality or cost, locks should be considered delay devices
only and not positive barriers to entry. The facility engineer is
responsible for determining the appropriate locks, latches, padlocks, and
other locking mechanisms on doors, vaults, cabinets, and similar built-in
items that are an integral part of a building or structure. Department or
agency regulations may prescribe specific types of locks for specific types
of facilities that store classified information.