Not disagreeing with you, just going on a tangent and extrapolating the point from the article, the third method group, "something you are" might jump into the

Not disagreeing with you, just going on a tangent and extrapolating the point from the article, the third method group, "something you are" might jump into the "something you have" if it can be extracted or copied from you which might be the case of fingerprints. You are the original source of fingerprint, but you leave copies of it everywhere, so then there are several sources to mimick from and they work just as well on these technologies.