security

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Steve Hoefer at Grathio labs shows off his Arduino based door opener, which responds to knocks on the door bye timing the gaps between the sounds. If the gap matches the programmed knock, it unlocks. Let's never use keys again!

Know a little bit about Arduino and care to make your own? Check out his Instructables post!

cars,holding it up,security
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From the submitter

Just happy this isn't my car. It was actually being driven. The driver used a rope to keep the door closed while driving.

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