This document discusses protective locks and keys used by law enforcement agencies. It defines a lock as an electronic or mechanical device that prevents entry, and a key as a device that opens a lock. It then describes different types of locks like padlocks, warded locks, disc tumbler locks, lever locks, combination locks, code operated locks, electromagnetic locks, and card operated locks. The document also discusses key terms like change key, grand master key, and master key. It concludes by covering key control methods such as using a key cabinet to store keys, maintaining key records, conducting key inventories and audits, and generating daily key control reports.

1. LAW
ENFORCEMENT
AGENCY II:
Protective Locks and
Keys

2. What is Lock ?
lLock is an electronic or mechanical device
that is designed to prevent entry into
building, container, or hiding place

3. What is key ?
Key - a device used to open a lock
Parts:
Bow - left protruding to be applied by the
user
Blade - slides into the key way

4. Padlock
Is a type of
lock that is
portable
and
detachable

5. Peterman - an English term
used to describe a lock picker

6. Types of
Locks

7. Warded locks
lThis type of lock
uses obstruction or
wards to prevent
the lock to open
unless the correct
key is inserted

8. Disc Tumbler Locks
This kind of
lock is
composed of
slotted
rotating
detainer

9. Lever Locks
Is a type of
lock that uses
a type of
levers to
prevent the
lock to open

10. Combination Locks
Is a
sequence of
numbers
used to open
the lock

11. Code operated locks
It opens by
pressing the
series of
numbers in
proper
sequence

12. Electromagnetic Locks
Is a locking
device that
consists of
electromagnetic
and an armature
plate

13. card operated locks
It is fitted with
recording
device which
register time of
use and the
identity of the
user

14. Change key
lis a key on the
lowest level of a
master keying
system
ldistinguished
from a master key .* change key is
not a master
key

15. Grand master key - it opens all kinds
of locks in a building
Master key - operates only one section,
floor or department of a building
Sub-master key - a key that will open
the lock of a particular area

17. Key Control
Key Cabinet - a cabinet that will have to be
of sufficient size to hold the original key to
every lock in the system
Key record - Some administrative means
must be set up to record code number of the
locks and to whom the keys of specific locks
was issued.
Inventories - periodic account must be made
of all diplicates and original keys in the hands
of the employees whom they have been issued.

18. Key cabinet

19. Key recods

20. inventories

21. Audits - an unannounced audit should
be made of all the key control records
and procedures by à member of the
management

22. Daily Report - made by the person
responsible for the key control from
the personnel department

23. (End)