New South Wales Consolidated Regulations(cf Crimes (Detention after Arrest) Regulation 1998 , cl 15)
(1) A separate custody record must be opened, as soon as practicable, for each person who is detained under Part 9 of the Act.
(2) A custody record may be in writing or in electronic form.
(3) All entries in a custody record must include the time at which the entry is made.
(4) The time of an event to which an entry in the custody record relates must also be included if the entry is not made within a reasonable time of the occurrence of the event.