Combination locks may seem secure, but they're not foolproof. Despite their popularity, they're vulnerable to a technique called "lock manipulation," where skilled individuals can determine the ...

Here’s a revival of the same method but now the instructions to retrieve the combination are ... up on the latch while the dial is rotated. Because of the way the lock is built the correct ...

One way some materials form memories is called return-point memory, which operates much like a single dial combination lock, according to Nathan Keim, associate professor of physics in the Penn State ...

Their target: a document safe with a S&G 8400 lock ... controller for it. The dial has butterfly knob in the center which must be rotated before and after each combination. That job is handled ...