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Lock picking
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=== Pin tumbler lock picking === [[File:Lockpicks.jpg|thumb|A traditional pick set. From left to right: tension wrench, "twist-flex" tension wrench, offset diamond pick, ball pick, half-diamond pick, short hook, medium hook, saw (or "L") rake, snake (or "C") rake.]] ==== Comb pick ==== [[File:Comb Picks.png|thumb|Two comb picks]] Comb picks push all the key and driver pins above the shear line allowing you to open the lock. ==== Tension wrench ==== [[File:Pin and tumbler lock picking.PNG|thumb|Illustration demonstrating the use of a tension wrench and pick]] The tension wrench or torsion wrench, is generally used when picking a [[Pin tumbler lock|pin tumbler]] or [[Wafer tumbler lock|wafer lock]]. It is used to apply [[torque]] to the plug of a lock to hold any picked pins in place. Once all pins are picked, the tension wrench is then used to turn the plug and open the lock. There are two basic types of tension: "bottom of the keyway" and "top of the keyway". The bottom of the keyway wrenches is typically shaped like a letter "L", although the vertical part of the letter is elongated in comparison to the horizontal part. Other tension tools, especially those for use with cars, resemble a pair of tweezers and allow the user to apply torque to both the top and the bottom of the lock. These are commonly used with double-sided wafer locks. ==== Half-diamond pick ==== This versatile pick is included in nearly all kits and is mainly used for picking individual pins, but can also be used for raking and wafer and disk locks. The triangular-shaped half-diamond is usually {{convert|2.5|to|12.2|mm|in|abbr=off}} long. The angles that form the base of the half-diamond can be either steep or shallow, depending on the need for picking without affecting neighboring pins, or raking as appropriate. A normal set comprises around three half-diamond picks and a full-diamond pick. ==== Hook pick ==== {{anchor|Hook pick}} The hook pick is similar to the half-diamond pick but has a hook-shaped tip rather than a half-diamond shape. The hook pick is sometimes referred to as a "feeler" or "finger" and is not used for raking. This is the most basic lockpicking tool and is all that a professional will usually need if the lock is to be picked in the traditional sense rather than opened by raking or using a pick gun. A variety of differently sized and shaped hooks are available in a normal set. ==== Ball pick ==== The ball pick is similar to the half-diamond pick, except the end of the pick has a half or full circle shape. This pick is commonly used to open [[Wafer tumbler lock|wafer locks]]. ==== Rake pick ==== [[File: Rake Lock Picks.jpg|thumb|Two types of rake pick, the double and triple peak, sometimes known as ''Bogota rakes'']] These picks, such as the common snake rake, are designed to ''rake'' pins by rapidly sliding the pick past all the pins, repeatedly, to bounce the pins until they reach the shear line. This method requires much less skill than picking pins individually and generally works well on cheaper locks. Advanced rakes are available which are shaped to mimic various pin height key positions and are considerably easier to use than traditional rakes. Such rakes are typically machined from a template of common key configurations since not all permutations of pin heights for adjacent pins are possible given the process by which keys are manufactured. ==== Decoder pick ==== The decoder pick is a key which has been adapted such that the height of its notches can be changed, either by screwing them into the blade base or by adjusting them from the handle while the key is in the lock. This will allow not only access to the lock but also a template for cutting a replacement key. ==== Bump key ==== [[Image: Bumping key.jpg|thumb|A typical bump key]] The simplest way to open the majority of pin locks is to insert a key (or variety of keys) that has been cut so that each peak of the key is equal and has been cut down to the lowest groove of the key. This key is then struck sharply with a hammer whilst applying torque. The force of the blow is carried down the length of the key and (operating as does a [[Newton's cradle]]) will move only the driver pins, leaving the key pins in place. If done correctly, this briefly creates a gap around the shear line, allowing the plug to rotate freely.<ref>{{cite news|title=Understanding Bump Keys (Video)|url=http://pursuitmag.com/understanding-bump-keys/|date=April 19, 2009|work=L. Scott Harrell|access-date=October 1, 2015}}</ref> Some modern high-security locks include [[Lock bumping|bumping]] protection, such as [[Master Lock]]'s "BumpStop"<ref>{{cite web|url=http://www.masterlock.com/cms/keying/security-enhancements|title=Security Enhancements - Master Lock|first=Master|last=Lock®|website=Masterlock.com|access-date=November 23, 2017}}</ref> and [[Ilco|ILCO]]'s "Bump Halt"<ref>{{cite web|url=http://www.kaba-ilco.com/key-systems/293454-654886/bump-halt-cylinder-faq-s.html|title=ILCO Key Systems|website=Kaba-ilco.com|access-date=November 23, 2017}}</ref> technology.
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