Recipe: Keyhole Block

The Keyhole Block is a special redstone device that powers both regular redstone as well as advanced circuits.

When placed, the first left or right click on this block will save the held item including its state. Only an item of the exact same type and state can activate this device. Upon activation it will toggle its power output.

It is planned to introduce a coating for blocks which will change the appearance of any kind of block it is applied to. It should allow to hide the keyhole block anywhere making it a perfect solution for opening camouflage hideouts.