This video, titled ‘Minecraft: Redstone Door Lock’, was uploaded by kindofdoon on 2010-11-22 06:58:56. It has garnered 18193 views and 17 likes. The duration of the video is 00:01:41 or 101 seconds.
Here is a 6-switch Redstone double-door lock. It was achieved through the use of the logic gates AND and NOR. There are 6 switches, each of which can be in 2 positions. Thus the total number of combinations for the door lock is 2^6, or 64. The switches start in the position 000000, and the proper code is 011001. The doors open when this exact position is attained, and close for any other position.
These videos assisted greatly with this project:
http://www.youtube.com/watch?v=QpvJ9wiywL4&feature=related http://www.youtube.com/watch?v=4DWwj69EsGQ