Who thought that the technique of disassembling the lock, which was discovered by the locksmiths, would prove to be a boon for the thieves? In the 1970s locksmiths shared a method for pounding on a lock cylinder while exerting light pressure to the back of the lock plug. When the pins jump inside of the cylinder, the plug is free to slip out, allowing the locksmith to rapidly disassemble the lock. This was a quick and simple solution for professional locksmiths back then, and it was largely used to remove a misassembled cylinder on their workstation.
A pin tumbler lock is made up of a sequence of spring-loaded pin stacks. Each pin stack is made up of two pins stacked on top of each other: the key pin, which touches the key when it is inserted, and the spring-driven driving pin. When the key pins of various lengths are aligned at their tops by inserting the appropriately cut key at their bases, the tops of the key pins and the bases of the driver pins make a shear line, allowing the cylinder to rotate and the key pins to move away from the driver pins. When there is no or the incorrect key in the lock, pin misalignment stops the cylinder from turning.
Lock bumping has been used for legal purposes by professional locksmiths for several decades until the introduction of bump keys. “Bump keys, also called a bumping key, are keys that have been cut with a master key and have that master key’s cuts duplicated down the length of the key tip. This allows the insertion of the bump key into the target lock.
The bump key’s uniquely formed teeth deliver a small hit to all of the key pins in the lock to cause bumps. For a fraction of a second, the driver pins “bounce” from the key pins in the shear line that aligns all of the pin stacks inside the lock cylinder. However, throughout the process, the individual adds a light rotational force to the key, causing the cylinder to revolve during the brief period when the driver pins are over the shear line, thus unlocking the lock.
Lock bumping is a growing trend in burglaries because it can make it simple and quick to break into residences without requiring any special equipment or leaving any indication of forced entry. It works almost as well as having a key around 90 percent of doors in the United States have cylinder locks that are vulnerable to lock bumping.
Consult with a competent locksmith to improve the security of your home. The specialists at locksmith sugar land can assess the level of security on your residential property and offer upgrades to prevent a burglary from occurring in the future.