There are many and varied articles that appear in this medium that give an inaccurate explanation about blocking shots. Having read many similar articles here, trying to impart the facts about the phenomena, I can’t help but feel that all these “so-called” experts actually have no idea what they are talking about. The keystroke was known and existed prior to the invention of the modern pin drum principle by Linus Yale Jr in 1862.
The original design of the pin drum method was found in ancient Egypt, where actual working models of a wooden pin drum lock were found during excavations of ancient sites. One of the oldest padlocks is on display in the Israel museum that houses the original Dead Sea Scrolls. The modern Yale-type key cylinder actually uses two sets of pins combined with springs and a “shielded” keyway to establish a secure locking mechanism.
The keyhole stroke focuses on the ability to recreate the “cut” line, normally created by the correct original key for the cylinder, by using a key of the same protection design as the target cylinder, but modified to the maximum depth for each position of the dryer. (the cuts in the key).
The key is partially inserted into said keyway. The head of the wrench is struck with a hammer or screwdriver, while exerting minimal torque pressure on the wrench. The action produces enough kinetic energy to “hit” the pins inside the chambers to recreate the “cut line.”
While previous authors suggest that the method was discovered by locksmiths in Denmark in the 1970s, the truth is that virtually all locksmiths know the bypass FOREVER. The main reason the keystrokes were kept quiet and within trading was to protect the market from the possible sense of insecurity that knowledge could bring.
Only since the advent of the internet has the phenomenon spread like a virus onto the scene. There are some manufacturers that have reacted to this hype and produced their own versions of “shock resistant” locks, but most of their attempts have not created 100% guaranteed shockproof products. There are already two types of 100% fully guaranteed shockproof (and virtually shockproof) key cylinder available today. Abloy and Bilock. Abloy is of Finnish design and has been around since 1908, while Bilock is an Australian design which has been around since 1972.
Contrary to the beliefs of some of the previous authors, these shockproof locks are not “that” expensive and are aesthetically pleasing and readily available around the world. Truth be told, keylock cases are nearly impossible to detect because the action is representative of the use of a key. For methods and products that will prevent this attack method, please contact the author.
