Related Rule
Japan
Practice Relating to Rule 123. Recording and Notification of Personal Details of Persons Deprived of Their Liberty
Japan’s Law concerning the Treatment of Prisoners of War and Other Detainees in Armed Attack Situations (2004) states:
Article 8 (1) In cases of taking delivery of a captive person … the designated unit commander shall promptly find the name, rank or position (hereinafter referred to as “rank, etc.”), date of birth, and identification card number, etc. (i.e. identification card number, individual number and other similar number, symbol or code given to identify the individual. The same shall apply hereinafter) of the captive person.
Article 28 The prisoner-of-war camp commander shall, at the commencement of detention to the prisoner-of-war camp, take measures, such as photographing, collecting of fingerprints and the like within the limit necessary for identification of the detainees, pursuant to an Ordinance of the Ministry of Defence. 
Japan, Law concerning the Treatment of Prisoners of War and Other Detainees in Armed Attack Situations, 2004, Articles 8(1) and 28.