The solution will operate fully offline.
Last week, Denuvo by Irdeto announced a technology to protect Switch games from piracy. Apparently, Nintendo is not involved in this initiative.
According to Kotaku, the solution was made in response to demand from publishers:
"Because of NDAs, we are not allowed to disclose company names, but we can say this solution comes from strong demand from publishing partners," Denuvo's spokesperson wrote.
The company emphasized that the tech doesn't have any in-game performance impact as the protection "is only active in non-performance critical code parts."
What's more, the solution operates offline, with no online checks required due to Switch's "limited online capabilities." Denuvo's spokesperson also confirmed the DRM would restrict the use of legally purchased games with Switch emulators on PC:
"As you know, dumping your bought game for backup purposes is a long-standing argument from pirates that is simply used to justify piracy. The majority of players use emulators with ROMs from pirate sources and are not self-dumped. And if they dump it themselves, they will require a jailbroken console to do that."
You may find these articles interesting