locked up

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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!

college lock locked up rubber band stupidity - 4765140480
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It took him a while for him to understand why all the kids were laughing at him on his first day of engineering class. ~Not-So-Handy Andy

flip flops locked up shoes stupid wtf - 4728726528
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And look at that, a wallet hiding underneath! ~Not-So-Handy Andy

locked up Professional At Work security - 5126783232
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They were so close to stealing the whole extension cord.

~NSHA

bike dual use flip flops locked up - 5424350976
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When it gets stolen, look for the angry and shoeless man wandering about in confusion.

~NSHA

car chain locked up padlock wheels - 4774789632
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Because car thieves never carry any sort of tools with them. ~Not-So-Handy Andy

cars locked up steering wheel the club - 5100124928
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But unlike his brother, he unfortunately does not double as a zombie weapon.

~NSHA

door knob dual use locked up scissors - 5378474240
By Unknown
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Proof that running with scissors can sometimes yield positive results.

~NSHA

bicycle bike dual use handcuffs locked up police - 4777163264
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Correct me if I'm wrong, but I'm pretty sure your evidence bag should be locked up as well. At the very least, protect your 32oz soda! ~Not-So-Handy Andy