This is a genius bit of 'bored at home' hacking. Some other links to similar pro... | Hacker News

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Pick-A-Hill2019 on Aug 28, 2020 | parent | context | favorite | on: Knock-Knock Door Lock: Unlocking your door with a ...

This is a genius bit of 'bored at home' hacking.

Some other links to similar projects.

https://www.instructables.com/id/Secret-Knock-Detecting-Door...

https://hackaday.com/2020/05/25/secret-knock-unlocks-door/

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