How a bump key works (part 1)

Bump key and kinetic energy tool

Engadget is running a multipart piece on bump keys and how they work in detail. This explains all the physics behind why a specially cut key can open any mechanical lock it fits in with a little bit of applied force (the bump key for Kwikset locks and a kinetic energy tool are shown above). It is a very interesting read for those who are into security or physics.

The Lockdown: Locked, but not secure (Part I) [Engadget via digg]

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