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Button Code Locks
A note about those push button code locks like shown above. They also have a major security flaw that without knowing the code you can gently press the buttons in a certain sequence that will unlock them every time. I wont say exactly how, but from experience at my workplace I noted similar issues with physical security. I think all locks are vulnerable in one way or another. I believe that most security minded folks that design this stuff have a general consensus that most people are not that smart to figure these things out. So they are not too afraid knowing that the "high security" locks are really not so secure after all.
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