IIRC, Anton's technique was to put a kind of spider-web of distinctive polygon links in one section. Distinctive enough so it could be recognized, but not so obvious (e.g. letters of the alphabet, words) that somebody with a vertex modeller would notice it and remove the extra polygon links. But if the rest of the mesh (99% or more) was identical to a pre-existing model, that would be enough proof of violation, so adding special polygons isn't necessary.