3.1 Every player must have an ID equipped on his or her ship. Players under level 30-32 might use Freelancer IDs (basic IDs sold on every station), players that reached level 30-32 must choose an NPC faction to ally with or buy a Neutral ID.
3.2 Carrying any unmounted IDs in your ship is prohibited. Transferring or trading IDs is also prohibited. This rule applies to faction leaders and server administrators.
3.3 To join a server faction that owns systems, you must get ID of this faction. This also means that players of level 29 and below cannot become full members of any system-owning faction.
3.4 Buying faction ID does not automatically means that player becomes part of appropriate server faction.
So, for example, if you get Zoner ID you don't become part of AW. But you can't join AW if you don't have this ID.
3.5 Criminal ID is given to players who violate server rules in exchange for their ordinary ID. Criminal ID disables tractor beam, but it is prohibited to unequip it or replace it with any other ID without server administrator sanction.