Simple mod that, right-clicking on a wall sign, interacts with the block it's attached to.
Example: Right-clicking on a sign attached to a chest will open the chest
As of v. 2.0.0, it now also works for banners, item frames & paintings (Configurable, off by default)
Required on both client & server side.
Feel free to use Passthrough Signs in any kind of modpack, as long as you link back to this page and don’t make any money of the modpack.