Passcode With Item Frame In Vanilla Minecraft

Ever wanted a passcode in minecraft without mods or complex circuitry? Your dream has come true, then.

WARNING: DO NOT TRY THIS IN A VERSION OLDER THAN 14w04a!

What you're going to need: item frame
                                                  iron door
                                                  redstone comparator
                                                  redstone dust (4)
                                                  item for the item frame(A tool is recommended.)

I'm still kind of sick, but I feel that I am healthy enough, (as of now), to upload a new (something)


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