A lock is a mechanical or electronic fastening device that prevents entry using a physical object like a key. There are many types of locks including warded locks, disc tumbler locks, pin tumbler locks, lever locks, combination locks, code-operated locks, card-operated locks, and padlocks. A key opens a lock and consists of a blade that slides into the lock and a bow to apply torque. There are different types of keys like change keys, submaster keys, master keys, and grand master keys. Key control refers to methods of ensuring only authorized people use certain keys and involves controlling key issue, duplication, lock rotation/replacement and maintaining records to ensure proper supervision of key

1. Protective
locks and
keys
Law enforcement
administration II

2. What is lock?
A lock is a mechanical or
electronic fastening device
that is released by a physical
object (such as a key, keycard,
fingerprint, and RFID)
designed to prevent entry into
building, room, container or
hiding place.

3. KINDS OF LOCKS

4. WARDED LOCK
• is a type of lock that
uses a set of
obstructions, or
wards, to prevent
the lock from
opening unless the
correct key is
inserted.

5. Disc tumbler lock
is a lock
composed of
slotted
rotating
detainer discs.

7. Pin tumbler lock
a lock mechanism that
uses pins of varying
lengths to prevent the
lock from opening
without the correct key
widely used in doors of
offices and houses.

9. Lever lock
is a type of lock
that uses a set
of levers to
prevent the
bolt from
moving in the
lock.

10. Combination lock
- is a
sequence of
numbers or
symbols is
used to open
the lock.

11. Code-operated lock
this opens by
pressing a series
of numbers
buttons in
proper
sequence.

12. Card-operated lock
coded cards
whether notched,
embossed or
embedded with
magnetic-fuels are
inserted to open

13. Padlock
are portable or
detachable locks
with a movable
shackle

14. What is key?
A key is a device that is used to
operate a lock. A typical key is a small
piece of metal consisting of two parts:
the blade, which slides into the keyway
of the lock and distinguishes between
different keys, and the bow, which is
left protruding so that torque can be
applied by the user.

15. Types of keys
1.Change key-a specific key, which operates the lock
and has a particular combinations of cuts which
match the arrangement of the tumblers in the lock.
2.Sub master key- a key that will open all the lock
within a particular area or grouping in given facility.
3.Master key- a special key capable of opening series
of lock.
4.Grand master key- a key that will open everything
in a system involving two or more master key groups.

17. Key control
Key Control refers to various
methods for making sure that
certain keys are only used by
authorized people. This is
especially important for master key
systems with lots of users.

18. • of key control measures by responsible persons.
What is the purpose of Key
Control?
1. To control the issue, use and storage of
keys and reserve key locks
2. To control reproduction of duplicate keys
3. To control lock rotation and or replacement
4. To maintain record on all of the above
5. To ensures proper supervisions of key
control measures by responsible persons.

19. PREPARED BY: GROUP 4
CALVA
PASAYLON
TABIN
SERAC
BANARES