"What's the secret knock?"
Steve Hoefer made a pipe-bomb-looking device that unlocks the door after detecting the secret knock (which can be changed to one's preference).
While this doesn't seem like the most secure way to lock up your house, it would be so epicly rad to have a secret bookcase door that utilizes this secret knock mechanism. ...or I may be watching way too much Scooby Doo...
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Comment by Eugene on November 10, 2009 at 6:13pm - i could see value in this...
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