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Around the circumference of the plug is a shell, which is fixed to the door or container. The basic algorithm for picking locks is remarkably simple: - Apply a small amount of torque to the plug. Lock picking is useful and worth studying for its generality and simplicity. Lock picking is a core skill of the locksmithing trade and is also of value to those evaluating, investigating, and studying security systems. The proper pick and torque tool selection depend on the shape of the keyway, the features of the lock, the picking technique, and the individual preferences of the user. Using the five or six pin lock, find a pick that lets you locate and lift each pin across its full range of motion without disturbing adjacent pins too much. You may find one of the smaller LAB hook picks to be easier here than the larger Peterson picks, although you can usually still pick this keyway with the small Peterson hook. These imperfections are very small -- as little as .0001 inches in some cases -- but they are what allow us to manipulate ("pick") locks open without using the correct key. See Figure 1. (In practice, the cuts are produced by stacking pin segments of particular lengths, not by actually cutting the pins; hence the term "pin stack.") With no key in the lock, all the pin stack cuts rest within the plug.

The rest is just technique -- locating and recognizing the state of each pin stack, manipulating the pins, applying torque to the plug. The pick design it calls a "rake" is called a "hook" by the rest of the world (it's the kind of pick you'll be using most). One day I was thinking about what kind of game I would make for Nintendo's upcoming Revolution console, and I thought it might be neat to use the controller as a paintbrush to paint pictures on the screen. The goal of this game was to explore gameplay modeled as a time-based composition (the way music is). There is no way of boxing it off so that there can be privileged people’s air and non-privileged people’s air. Few burglars can afford to risk exposure during the time required to pick even relatively easy locks, and unexplained possession of lock picking tools is often considered prima facia evidence of criminal intent. What is Lock Picking?

The principles and skills of lock picking, once mastered, can be applied against the vast majority of commercial pin tumbler locks, and the basic tools, if somewhat unusual, are quite simple. These skills become very important when picking better quality locks, so take your time here. Picking depends on weaknesses in the implementation of locks -- small manufacturing imperfections -- rather than fundamental, abstract design flaws that would be present no matter how carefully made the locks might be. Chalk in small cubes is applied uniformly to the cue tip permitting the players to strike the cue ball off centre on purpose in order to impart a spinning motion, called "side" in Great Britain and "English" in the United States. Learning from experienced players or seeking professional coaching can accelerate your progress. Spend a lot of time playing with the three pin lock so that you can recognize the pin states easily and naturally. It's hard to learn these skills all at once on off-the-shelf commercial locks, but that's what many people who try to learn lock picking end up doing (before giving up in frustration). Although somewhat romanticized by popular media and culture, in reality the significance of lock picking is usually dwarfed by other, more practical threats.

If this pin stack is slowly pushed up with torque applied to the plug, eventually its cut will reach the shear line and the plug will turn a bit more. The top pin of that pin stack will be trapped above the shear line, the bottom pin will fall freely, and now a new pin stack (the next most misaligned one) prevents further rotation. When the energy transfers, the top pin moves up while the bottom pin slows down, and a gap is created between the two pins. A correctly keyed wafer is flush with the plug on the top and the bottom and allows rotation. Rotation of the plug within the shell operates the locking mechanism. In particular note that because the pins are slightly out of alignment, as the plug is turned gently, only the pin stack that is most out of alignment actually prevents further rotation. In an ideal lock, all of the pin holes in the plug would be in perfect alignment with the corresponding holes in the shell, the centerline of the plug would be exactly parallel to that of the shell, and all of the pins would be exactly the same diameter.

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