We bring you hacks and tricks to make life easier with technology around you.
You can program the gadget / lock to open the door with specific knock codes of your own.
This DIY is for the enthusiasts which involves more than just basic electronics knowledge. The gadget built here involves a little programming, but simple enough to follow and make it yourselves. All you need are a few electronic components, and some basic skills for soldering and programming. Once done, you can program it to open your door without a key. You can simply knock on your door and the gadget will open it for you. You can program the gadget / lock to open the door with specific knock codes of your own.
( Source : Deccan Chronicle. )
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