Matrix = Bump-proof


Australian television has recently highlighted a method of bypassing locks, called key-bumping.

Key bumping requires two basic tools. Firstly any key that enters the lock, secondly something to 'bump' it with. The key is filed down so it just touches the pin tumblers, and the subsequent 'bump' serves to seperate the pin stacks allowing the key to turn.

Bumping does work reasonably well in locks with lazy manufacturing tolerances, and in the USA (where bumping fads are real) many of their locks fall into this category. If the pin tumblers are rounded on the ends, this makes bumping much easier. The roundness of the contact area between bottom pin and top pin accentuates the kinetic energy from the 'bump'... remember back to the 80's when CEO office desks sported those 5 chrome-plated balls susupended on fishing line... pull one back and it bumps the other one out... same principle here. Cheaper locks sold at hardware chains usually have these rounded tumblers, so that their key "duplication" machine can "copy" extra keys regardless of when the machine was last calibrated.

Whilst Matrix locks do operate on the time-tested pin tumbler design, all our keys are factory cut to exact specifications. This means our tumblers can have lovely flat mating areas, which absorbs the kinetic energy from a bump. (Imagine those same 5 chrome balls, now as cubes). But this is irrelevant anyway because Matrix has always used bump-proof devices, and yes we're still calling them 'proof' until proven otherwise. Several bumping experts have tried without success. Bump Proof ✔

 

 


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