![]() It is standard practice to make each pin chamber of a Schlage system either even or odd. This is called a single-step masterkey system. For instance, if the master key is 1 4 3 5 2, an apartment key (Kwikset is used on apartments but almost never on commercial buildings) might be 2 3 2 4 3. It is standard practice to masterkey Kwikset in single steps. Unless the locks are much worn, but keys that differ by only 0.015” might Also, keys that differ by 0.023” will not interchange ![]() Master pin available any thinner and it would get stuck between the plugĪnd the cylinder. (numbered 1 to 6) in increments of 0.023” and Schlage has ten possibleĭepths (numbered 0 to 9) in increments of 0.015”. For instance, Kwikset has six possible depths The depths of the cuts on a key come in discrete increments and this is ![]() Blaze is stumped is proof enough that they do My mail-orderĬores are way beyond advanced, but I am not going to describe how they Blaze’s paper for the less literate members, so I am not giving anything away when I summarize the technique here.įirst I will describe standard practice among locksmiths and then I willĭescribe practices that exist but are considered advanced. But the burglary forums have many threads started by the more literate members to interpret Mr. Matt Blaze’s original paper was a bit opaque due to his use of terminology from cryptography, a field that the typically illiterate burglar is unfamiliar with. The image below is of a certified mail receipt recording when I sent Mr. See my PDF file, Mail-Order Cores that Defeat Matt Blaze, to see what I am doing about this threat. This technique has been heavily promoted in the burglary community and is available for download from every burglary forum. Here he describes how anybody given a key only to their own office can use it to create a master key that operates every lock in the building. Matt Blaze has published a paper, Rights Amplification in Master-Keyed Mechanical Locks.
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