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Knock Lock – Unlock a Door with a Secret Knock (2009)
- Cogito 14y agoSome previous discussion: http://news.ycombinator.com/item?id=924237 http://news.ycombinator.com/item?id=924237 http://news.ycombinator.com/item?id=927299 http://news.ycombinator.com/item?id=927299 I wonder how easy a similar set-up with a Raspberry Pi would be. The option to use the same hardware, but provide a web service to control the door as well, or other authentication methods would be cool to see.
- Cogito 14y agoApparently I missed the original as well! - it's at: http://grathio.com/2009/11/secret-knock-detecting-door-lock.html http://grathio.com/2009/11/secret-knock-detecting-door-lock....