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| == MIT Guide to Lock Picking ==
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| <!-- This document is copied from MITLockGuide.pdf [MD5: 2966b8658fd57ade59c97358edc73f2f]
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| I have not performed any spelling or grammar corrections at this point.
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| Modifications from original:
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| - Fixed strange unicode bug where letter combinations 'fa' 'ff' and 'fl' were replaced by a multibyte character.
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| - Formatted italicized words as they appear in the original.
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| - Used standard wiki formatting for chapter sections.
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| - Attempt to format the legal quotation as depicted in original.
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| Once I upload the illustrations, I will create a backup _(original) and then allow the page to be modified by anyone.
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| -Raccoon -->
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| Ted the Tool. September 1, 1991.
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| Copyright 1987, 1991 Theodore T. Tool. All rights reserved.
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| 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.
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| <div style="color:#a00; padding:15px;">'' '''Editor's note''': The source PDF of this guide is available at https://www.lysator.liu.se/mit-guide/MITLockGuide.pdf (MD5 checksum: 2966b8658fd57ade59c97358edc73f2f). The version presented here has been edited for spelling and contemporary terminology only. Illustrations have be recreated in color for clarity and legibility.''</div>
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| <!--Chapter 1. -->
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| === It's Easy ===
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| The big secret of lock picking is that it's easy. Anyone can learn how to pick locks.
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| The theory of lock picking is the theory of exploiting mechanical defects. There are a
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| few basic concepts and definitions but the bulk of the material consists of tricks for opening
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| locks with particular defects or characteristics. The organization of this manual reflects this
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| structure. The first few chapters present the vocabulary and basic information about locks
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| and lock picking. There is no way to learn lock picking without practicing, so one chapter
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| presents a set of carefully chosen exercises that will help you learn the skills of lock picking.
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| The document ends with a catalog of the mechanical traits and defects found in locks and
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| the techniques used to recognize and exploit them. The first appendix describes how to make
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| lock picking tools. The other appendix presents some of the legal issues of lock picking.
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| The exercises are important. The only way to learn how to recognize and exploit the
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| defects in a lock is to practice. This means practicing many times on the same lock as well
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| as practicing on many different locks. Anyone can learn how to open desk and filing cabinet
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| locks, but the ability to open most locks in under thirty seconds is a skill that requires
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| practice.
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| Before getting into the details of locks and picking, it is worth pointing out that lock
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| picking is just one way to bypass a lock, though it does cause less damage than brute force
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| techniques. In fact, it may be easier to bypass the bolt mechanism than to bypass the lock.
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| It may also be easier to bypass some other part of the door or even avoid the door entirely.
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| Remember: There is always another way, usually a better one.
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|
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| === How a Key Opens a Lock ===
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| <!--Chapter 2. -->
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| [[Image:MIT-GUIDE-Figure-2.1.jpg|right|thumb|400px|Figure 2.1: Workings of pin tumbler locks|link=http://lockwiki.com/images/9/91/MIT-GUIDE-Figure-2.1.jpg]]
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| This chapter presents the basic workings of pin tumbler locks, and the vocabulary used in the
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| rest of this booklet. The terms used to describe locks and lock parts vary from manufacture
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| to manufacture and from city to city, so even if you already understand the basic workings
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| of locks, you should look at figure 2.1 for the vocabulary.
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| Knowing how a lock works when it is opened by a key is only part of what you need to
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| know. You also need to know how a lock responds to picking. Chapters 3 and 5 present
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| models which will help you understand a lock's response to picking.
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| Figure 2.1 introduces the vocabulary of real locks. The key is inserted into the ''keyway''
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| of the ''plug''. The protrusions on the side of the keyway are called ''wards''. Wards restrict the
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| set of keys that can be inserted into the plug. The plug is a cylinder which can rotate when
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| the proper key is fully inserted. The non-rotating part of the lock is called the ''hull''. The
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| first pin touched by the key is called pin one. The remaining pins are numbered increasingly
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| toward the rear of the lock.
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| The proper key lifts each pin pair until the gap between the ''key pin'' and the ''driver pin''
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| reaches the ''sheer line''. When all the pins are in this position, the plug can rotate and the
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| lock can be opened. An incorrect key will leave some of the pins protruding between the
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| hull and the plug, and these pins will prevent the plug from rotating.
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|
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| <!--Figure 2.1: Workings of pin tumbler locks-->
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| <br clear="all">
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| == Disassembly instructions edit == | | == Disassembly instructions edit == |
