Keys that can fit into unintended masterkey systems can open locks they’re not supposed to open; with the key inserted, only thousandths of an inch can make a difference. An inexact cut on the key or a cylinder component slightly out of tolerance could be enough to allow operation and dangerous “key interchange”.
ASSA has developed a revolutionary way to eliminate these threats:
The ASSA 6000 high security cylinder incorporates two independent locking mechanisms – the first is a standard pin tumbler system; the second a sidebar mechanism uniquely coded to a matching key. The coded sidebar and mated key form the effective discrete keyway. Add to this the fact that ASSA keys are protected by two U.S. patents and you have the maximum in key security. It’s that simple.
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