Only the following may use the software covered by this chapter:
1° Employees of the departments mentioned in article 230-20, individually designated and specially empowered, for the sole purposes of the investigations referred to them ;
2° Public prosecutors and investigating magistrates, for investigations relating to offences referred to them;
3° The competent public prosecutor, for the purposes of the supervision he or she exercises under article 230-23 ;
4° The magistrate mentioned in article 230-24.
The authorisation mentioned in 1° of this article specifies the nature of the data to which it gives access.