2 Test: Do Bump Keys Unlock Almost Any Deadbolt?

We started by looking at what makes the bump key different. The ridges are all filed down.
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[96] How To Learn To Rapidly Open Locks With A Bump Key! (How

Bump Keys KW1, KW11, SC1, SC4, Y1, Y11, M1, M10

Came home to find this device attached to my front door covering

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How to Create a Bump Key to Open Any Door « Null Byte :: WonderHowTo

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