Hey guys!
This is a color coded lock that I made in minecraft. You need to place correctly colored concrete powder blocks in front of observers, and only if they are all correct, you will get a pulse output which can be used in any way you want.

Link To Video

In the world download that I have provided, there are 2 locks. One of them I used for the showcase in the video and the other is the one I started building in tutorial, but extended it later to have 10 colors.
Have a look at the video and download the world to check it out yourself.


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Cheers.