Each Pilot also has an identification card. This, in roleplay, is the pilot's, and not the ships.
Now, let's talk on a Pilot's ID card. This has been part of the vanilla Freelancer, and naturally also exists within roleplay boundaries of Discovery. Even when you walk into a bar for the first time, the NPCs ask for your "card" before actually talking to you. This, however, doesn't mean the pilot slaps it against the windshield of the ship every time he goes for a fly, so cannot be seen when scanning the ship. It means characters can still ask for a stranger's "ID" before deciding which way to take the interaction, and "IDs not being part of the roleplay" simply refers to the ID item mounted on the ship which appears in the scan screen, and not the pilot's actual set of identification papers.
So to put it simple: Every pilot still has an ID, you just can't see it by scanning their ship, and would have to actually ask for it. Now if they send you a falsified identification? Well, tough luck. Who says that's not roleplay?
Who says that's not powerplay?
It's nice and cool to have this "Pilot ID" but what else do we have to back up our claims about a Pilot ID besides the roleplay, besides our word? What is the standard, what defines what is roleplaying and what is powergaming? You? Should we run to you everytime we have a debate in-game over eachother's roleplay/powerplay?
What do I do in my Council ship if I see a Gallic Junker IFF'd Collector with Gallic Junker ID claiming to be an undercover Council agent, and inRP "giving" me a Pilot ID to prove it? He says it's valid, I say it's fake, who's right now?
(And for god's sake, save us from "common sense" arguments. That one doesn't exist.)
PS: Oh, and in the meanwhile some could clarify which one of the IDs should be considered when dealing with Faction Rights. Thanks.