(ebook) - The Secret Of Picking Locks Is That It's Easy.pdf
(
726 KB
)
Pobierz
Chapter 1
Chapter 1
It's Easy
The big secret of lock picking is that it's easy. Anyone can learn how to pick locks.
The theory of lock picking is the theory of exploiting mechanical defects. There are a few
basic concepts and definitions but the bulk of the material consists of tricks for opening
locks with particular defects or characteristics. The organization of this manual reflects
this structure. The first few chapters present the vocabulary and basic information about
locks and lock picking. There is no way to learn lock picking without practicing, so one-
chapter presents a set of carefully chosen exercises that will help you learn the skills of
lock picking. The document ends with a catalog of the mechanical traits and defects
found in locks and the techniques used to recognize and exploit them. The first appendix
describes how to make lock-picking tools. The other appendix presents some of the legal
issues of lock picking.
The exercises are important. The only way to learn how to recognize and exploit the
defects in a lock is to practice. This means practicing many times on the same lock as
well as practicing on many different locks. Anyone can learn how to open desk and filing
cabinet locks, but the ability to open most locks in under thirty seconds is a skill that
requires practice.
Before getting into the details of locks and picking, it is worth pointing out that lock
picking is just one way to bypass a lock, though it does cause less damage than brute
force techniques. In fact, it may be easier to bypass the bolt mechanism than to bypass the
lock. It may also easier to bypass some other part of the door or even avoid the door
entirely. Remember: There is always another way, usually a better one.
Chapter 2
How a Key Opens a Lock
This chapter presents the basic workings of pin tumbler locks, and the vocabulary used in
the rest of this booklet. The terms used to describe locks and lock parts vary from
manufacture to manufacture and from city to city, so even if you already understand the
basic workings of locks, you should look at
figure 2.1
for the vocabulary.
Knowing how a lock works when a key opens it is only part of what you need to know.
You also need to know how a lock responds to picking. Chapters
3
and
5
present models
which will help you understand a lock's response to picking.
Figure 2.1
introduces the vocabulary of real locks. The key is inserted into the
keyway
of
the
plug
. The protrusions on the side of the keyway are called
wards
. Wards restrict the
set of keys that can be inserted into the plug. The plug is a cylinder, which can rotate
when the proper key is fully inserted. The non-rotating part of the lock is called the
hull
.
The first pin touched by the key is called pin one. The remaining pins are numbered
increasingly toward the rear of the lock.
The proper key lifts each pin pair until the gap between the
key pin
and the
driver pin
reaches the
sheer line
. When all the pins are in this position, the plug can rotate and the
lock can be opened. An incorrect key will leave some of the pins protruding between the
hull and the plug, and these pins will prevent the plug from rotating.
Figure 2.1: Workings of pin tumbler locks
Chapter 3
The Flatland Model
In order to become good at picking locks, you will need a detailed understanding of how
locks works and what happens as it is picked. This document uses two models to help
you understand the behavior of locks. This chapter presents a model that highlights
interactions between pin positions.
Chapter 4
uses this model to explain how picking
works.
Chapter 9
will use this model to explain complicated mechanical defects.
The "flatland" model of a lock is shown in
Figure 3.1
. This is not a cross section of a real
lock. It is a cross section of a very simple kind of lock. The purpose of this lock is to keep
two plates of metal from sliding over each other unless the proper key is present. The
lock is constructed by placing the two plates over each other and drilling holes, which
pass through both plates. The
figure
shows a two-hole lock. Two pins are placed in each
hole such that the gap between the pins does not line up with the gap between the plates.
The bottom pin is called the
key pin
because it touches the key. The top pin is called the
driver pin
. Often the driver and key pins are just called the driver and the pin. A
protrusion on the underside of the bottom plate keeps the pins from falling out, and a
spring above the top plate pushes down on the driver pin.
If the key is absent, the plates cannot slide over each other because the driver pins pass
through both plates. The correct key lifts the pin pairs to align the gap between the pins
with the gap between the plates. See
Figure 3.3
. That is, the key lifts the key pin until its
top reaches the lock's sheer line. In this configuration, the plates can slide past each other.
Figure 3.3
also illustrates one of the important features of real locks. There is always a
sliding allowance. That is, any parts that slide past each other must be separated by a gap.
The gap between the top and bottom plates allows a range of keys to open the lock.
Notice that the right key pin in
Figure 3.3
is not raised as high as the left pin, yet the lock
will still open.
Figure 3.1: Flatland model of a lock
Figure 3.2: (a) Flatland key raises pins
Figure 3.3: (b) Proper key allows plates to slide
Chapter 4
Basic Picking & The Binding Defect
The flatland model highlights the basic defect that enables lock picking to work. This
defect makes it possible to open a lock by lifting the pins one at a time, and thus you
don't need a key to lift all the pins at the same time.
Figure 4.1-4.3
shows how the pins of
a lock can be set one at a time. The first step of the procedure is to apply a sheer force to
the lock by pushing on the bottom plate. This force causes one or more of the pins to be
scissored between the top and bottom plate. The most common defect an inck lo is that
only one pin will bind.
Figure 4.1
shows the left pin binding. Even though a pin is
binding, it can be pushed up with a picking tool, see
Figure 4.2
. When the top of the key
pin reaches the sheer line, the bottom plate will slide slightly. If the pick is removed, the
overlapping bottom plate will hold up the driver pin, and the key pin will drop down to its
initial position, see
Figure 4.3
. The slight movement of the bottom plate causes a new pin
to bind. The same procedure can be used to set the new pin.
Thus, the procedure for
one pin at a time picking
a lock is to apply sheer force, find the
pin, which is binding the most, and push it up. When the top of the key pin reaches the
sheer line, the moving portion of the lock will give slightly, and driver pin will be trapped
above the sheer line. This is called
setting
a pin.
Chapter 9
discusses the different defects that cause pins to bind one at a time.
•
1. Apply a sheer force.
•
2. Find the pin that is binding the most.
•
3. Push that pin up until you feel it set at the sheer line.
•
4. Go to step 2.
Table 4.1: Figure 5: Picking a lock one pin at a time.
Figure 4.1: (a) Sheer force causes driver to bind
Figure 4.2: (b) Pick lifts the binding pin
Plik z chomika:
radar6
Inne pliki z tego folderu:
Ray Mears - Outdoor Survival Book(1).pdf
(99545 KB)
(Ebooks) Survival - South African Special Forces.pdf
(33034 KB)
Ray Mears - Outdoor Survival Book.pdf
(99545 KB)
(Ebook - Pdf) Survival - Vegetable Oil-Fueled Cook Stove.pdf
(14 KB)
(Ebook - Survival) - How To Make Emergency Gas Masks.pdf
(897 KB)
Inne foldery tego chomika:
Pliki dostępne do 16.11.2022
Pliki dostępne do 21.01.2024
aktywność fizyczna, sport
aktywność umysłowa, umiejętności
Amiga
Zgłoś jeśli
naruszono regulamin