sudomod

In the videos by Wermy, it is mentioned that the minty pi can be built without the button pcb by using copper tape. How is this done? Where can I learn about using this?

Thanks

Check out this post :
http://www.sudomod.com/game-boy-zero-guide-part-2/

If I were to buy a broken DL Lite and harvest the buttons from it, would I even need to fuss with copper tape, or would the buttons already have their own wires connected to contacts?