Mitchell McKenna - tagged with secret-knock http://mitchmckenna.com/feed en-us http://blogs.law.harvard.edu/tech/rss LifePress mitchellmckenna@gmail.com Secret Knock Detecting Lock http://mitchmckenna.com/post/4860/secret-knock-detecting-lock

Unlock your door with a secret knock. More information, source and schematics at http://grathio.com

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