Monthly Archives: June 2012

What is a master key?

Did you ever wonder how the maintenance guy can open every door in your building, yet all he carries with him is one key? The key he carries is a master key, and while all other keys may only open of each doors in the building, his key is not limited at all. There is nothing special about the actual key in a master key system. The real explanation lies actually within the locks themselves. The way a lock works is very similar to a puzzle, only when inserting the correct read more

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June 2012
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