Keycard Door | Minecraft Redstone Tutorial

In this video I show how to build a keycard door using Redstone. Enjoy! First song: https://www.youtube.com/watch?v=dpVlfp6GFck Second song: https://www.youtube.com/watch?v=6d3Nu4GrtCo Third song: https://www.youtube.com/watch?v=CbO4pC6HHHE