Bank - Storagesystem

Hi everyone,

I would like to show you my biggest redstone project that I've ever made.
Its a Minecraft bank or storagesystem how ever youw ant to call it.

It has 4 storages and each storage has its own 4 digit pin lock.
There are 2 additional security functions build in.
The first will avoid to pick more than 1 storage at the same time.
The secound one will warn you when a minecart couldnt successfully be integrated into the minecartstorage.

All in all its a very compact and durable system that will help you to store your treasures on a multiplayer server.
So have fun with it :)