security

bad puns,bathroom kludge,dual use,pencil,security
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Did I just make a pun about writing utensils and poop, based on a popular idiom? Yes. Yes I did. You're welcome.

~NSHA

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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!

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