In Argentina the only nationally issued identification is the DNI, "Documento Nacional de Identidad" (National Identity Document). It is a number not related to anything in particular about the person (except for immigrants who get assigned numbers starting at 92,000,000). It is assigned at birth by the "Registro Nacional de las Personas" (National Registry for People), but parents need to sign up their children, and because of this there are some people, especially the poor, who do not have a DNI.