I believe that is not a good idea!

When you will make a Snap to the corner of this cube, if you don't care of the Name of the snap you will have all chance to snap on a numerous points of your "hidden" signature!
So false constructions in perspective! :)

And the numbers of surfaces & or Edges is always a revelatory of something wrong! :)

Code an hidden signature inside a texture seems very more powerful! :)