In order for the relevant market surveillance and data protection authorities to be able to supervise the use of 'real-time' remote biometric identification systems in publicly accessible spaces for law enforcement purposes, in accordance with the relevant rules laid down by this Regulation, Member States should entrust to the market surveillance authority concerned the task of receiving the documentation relating to individual uses. This documentation should contain, in particular, information on the period and geographical area, as well as prior authorisation granted by a judicial or administrative authority.