All non-Costa Rican citizens with a "resident status" must carry an ID card ("Cédula de Residencia"), otherwise, a passport and a valid visa. Each resident's ID card has a unique number composed of 12 digits; the first three of them indicate their nationality and the rest of them a sequence used by the immigration authority (called Dirección General de Migración y Extranjería). As with the Costa Rican citizens, their Social Security number and their driver's license (if they have it) would use the same number as in their own resident's ID card.