Passcode Locked Trap Door in Minecraft

Hello! In this instructable I will show you how to build a kind of hidden passcode locked piston trapdoor!
This contraption works in all editions of minecraft

You will need...

Redstone
Repeaters
Comparator
Redstone torches
Piston
Hoppers
Some blocks of your choice
And a dispenser

Dig out a 7x4x2 area the red block is to mark where you will be falling down.
I would suggest putting water at the bottom so that you don't die.

Place any block of your choice in the right hand side of the hole in the shape shown in the picture

Place a single block in the back of your hole one block away from the shape you just made

Make a backwards L shape as shown in the picture

Place a Redstone torch on the single block that you placed earlier on

And another torch here

Put 3 Redstone dust as shown

Then add a repeater going out of the Redstone dust

Then 3 more Redstone going towards the block that the torch is on

Add a sticky piston make sure it's sticky it should extend

Now it gets a little bit tricky put a comparator on the backwards L shape going into the part that sticks up

Add a dispenser on the left of the hole that you made as shown above

Put a hopper make sure it goes into the dispenser

Put a hopper on top of the other one

Name 4 blocks of wool with an anvil but name it with random numbers and letters as shown name every piece of wool differently

Name 64 of the same item to use as your key make sure no-one else knows the password after that put 18 of your keys in the bottom hopper

Put your 4 wool in the same hopper as your keys

Put hoppers going down into your base leading to a chest

Put some dirt next to the piston

Then patch the rest up as shown above

Now you can test out your new trapdoor put 1 of your key into the hopper then fall down into your base. Good luck and have fun!