Skeleton keys can be found even today in houses that were built before 1940s. Modern “flat keys ” were first introduced to the public by Linus Yale, Sr and Jr. in mid 1800s. Bu using tumbler lock and more sophisticated way of regulating the pins, these flat keys become instant success across entire world.

5 Skeleton Keys That Open All Warded Locks!

Come see Brian live in San Francisco ~ http://bit.ly/1LcfRmk Thanks again to Longhorn Lockpicking for letting us pick their brains!

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