Instead of separating the wheat from the chaff according to what layer it is found in, this relies on the different optical properties of the various inks, the mould and the parchment itself.
Its properties are so useful and unusual that it is used not only to create the base layer of skis, but also to make bulletproof jackets and artificial hip and knee joints.
Because smart skins are grown by depositing layer upon layer, the base coating can be used as a foundation for adding other ingredients to tailor the material's properties for specific purposes.