Key Light Switch

Take a look how I did it: https://www.instructables.com/id/Key-Light-Switch/
Light Switches are everywhere, house , offices, bathrooms,... and everyone must touched the same switch to turn on/off the lights. Few places have switches that don't need to be touch to be used because they are much more expensive. Here, I am offering a cheap and touchless solution.

With this device I tried to achieve two goals:

Do not spread the covid-19 through light switches
Privacy: only certain people (the one with the keys) can use the light switch.

https://youtu.be/nHNViYMbT0M
How to assemble it: https://www.youtube.com/watch?v=Y7WROis6z4s&feature=youtu.be