The invention relates to a method for encoding a dimensionally stable packaging container or an associated constituent made of plastics material, wherein the packaging container is suitable for storing consumer goods such as food, detergents, etc., wherein a film-shaped, flat plastics material for forming the three-dimensional packaging container or the associated constituent is deep-drawn using a tool mold while, at a plurality of positions, the outer sides or the inner sides thereof undergo a first shape-changing treatment acting on the first surface thereof for producing a plurality of three-dimensional codes.