Get the latest tech news
Switch 2 game-key cards won't be tied to your Nintendo account
Switch 2 game developers can sell their work as a "Game-Key card," which looks like a traditional physical game cartridge, but has no game data stored on it.
And unfortunately, game-key cards don't future-proof customers against the day when Nintendo might decide to shut down the servers for the Switch 2, as it did with other sunsetted hardware like the Wii U and 3DS in 2024. We already knew that Nintendo would have an option called GameShare that supports local multiplayer with only a single purchased copy of the title, while Virtual Game Cards offer digital sharing (if in a convoluted way). The addition of game-key cards that aren't tied to a single person's Nintendo account makes it easier to pass a game off to a friend once you've finished with it, or to resell it and recoup some of the $80 price tag of major releases.
Or read this on Endgadget