Hacking the Sony Playstation 5
schneier.com
schneier.com
He says. I think the PS5 is pretty much safe because I've never physically seen one...
... if i'll still remember what it's for at that point.
I don't really care what people do in single player.
Fast forward to today: That's how it's done at the moment.
You can also make the disc acquire a lock on its UUID when it plays in multiplayer, and while the lock is held nobody else can acquire it. If you see too much lock contention it could suggest that the disc is being copied at scale (as it normally should never happen, but you can allow some leeway in case the lock wasn't released due to a legitimate issue).
They'd need an infinite source of valid IDs which would mean they'd need to buy discs for each ID at which point the piracy problem is kinda solved?