Household Registration Act Article 55
The generation and assignment of National ID Card numbers and household certificate numbers shall be stipulated by the central competent authority and be executed by the Household Registration Office.
中文原文 戶籍法第55條
國民身分證統一編號與戶口名簿戶號之編定及配賦方式，由中央主管機關定之，交由戶政事務所配賦。