Early on, during the period of martial law, obtaining a passport required special permission. Economic or educational institutions, for instance, might need to certify that the passport's bearer had to go abroad for business or study.
早年戒嚴時期，能持有護照是一種特許，由經濟、教育等主管機關認定某人確實有經商、留學的需要，才讓外交部發給他護照。