Buildcraft Locking Mechanisim

This is a door lock using buildcraft. Instead of using a complicated button combination it uses items as the keys to the door. You can set up-to 4 of any minecraft item as a key. Simply toss the items into the slot and give it a moment and the door will unlock. hit the lever to return the items/keys to yourself before leaving. Incorrect items will be place in the chest inside the safe.

Please watch the video for explanation on how it works to build it for yourself.

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www.youtube.com/watch?v=1abtfMSFhCU&feature=plcp