Distribution
Copyright 1987, 1991 Theodore T. Tool. All rights reserved.
Permission to reproduce this document on a non-profit basis is granted provided that this copyright and distribution notice is included in full. The information in this booklet is provided for educational purposes only.
August 1991 revision.
The MIT Hackning community’s opinion.
Contents
- 1 It’s Easy
- 2 How a Key Opens a Lock
- 3 The Flatland Model
- 4 Basic Picking & The Binding Defect
- 5 The Pin Column Model
- 6 Basic Scrubbing
- 7 Advanced Lock Picking
- 8 Exercises
- 8.1 Exercise 1: Bouncing the pick
- 8.2 Exercise 2: Picking pressure
- 8.3 Exercise 3: Picking Torque
- 8.4 Exercise 4: Identifying Set Pins
- 8.5 Exercise 5: Projection
- 9 Recognizing and Exploiting Personality
Traits- 9.1 Which Way To Turn
- 9.2 How Far to Turn
- 9.3 Gravity
- 9.4 Pins Not Setting
- 9.5 Elastic Deformation
- 9.6 Loose Plug
- 9.7 Pin Diameter
- 9.8 Beveled Holes and Rounded pins
- 9.9 Mushroom Driver Pins
- 9.10 Master Keys
- 9.11 Driver or Spacer Enters Keyway
- 9.12 Vibration Picking
- 9.13 Disk Tumblers
- 10 Final Remarks
- A Tools
- B Legal Issues
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[...] Chapter 1 > Back to Index > [...]
[...] Knowing how a lock works when it is opened by a key 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. [...]
[...] Back to Index > Chapter 2 > [...]
[...] 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 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 a 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 driver pin will be held up by the overlapping bottom plate, 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. [...]
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with a horizontal think often the tree, trees by year. on me. I still work tree work
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