After the concept was revealed during the Nintendo Direct in late March, the Virtual Game Card update for the original Nintendo Switch has now gone live. However, reports are now surfacing that along with that update, a loophole allowing multiple Switch systems to share one digital copy of a game for online play has been closed, which forces each Switch to now own its own copy of said game.
According to Eurogamer, before the update, if a single Nintendo Account was logged in to two separate Switch devices, those devices could both boot up a game owned by that account and play it online together. With the new update, if one Switch has the game booted up and is playing online, the other is no longer able to join them.