I thought I might put this in here, because the post wouldn't fit in a new thread, and that it does deal with wires.
So you know how a metal door can be locked when wires are attached to it? Why not make it so a wire next to a chest will keep the chest from being accessed? A switch will change the status of action from openable to locked.
Or, maybe, we could add a key tool, which will do the same thing without wires