In Russia, they developed a device called MIG-Switch, which is an adapter for microSD cards. The device is made in the form of a game cartridge for Nitendo Switch and allows you to record copies of games from this console onto a memory card and then run the copied games without the original cartridge. The new product is suitable for all Nintendo Switch.
According to the developers, MIG-Switch accepts all Nintendo Switch consoles, regardless of version, firmware and type. The new device does not require any console modification, installation of additional software or firmware changes.
To switch between games, you must physically remove the MIG-Switch and reinsert it into the Switch game slot. The creators claim that the device cannot be blocked by Nintendo because it is officially aimed at third-party game developers and law-abiding citizens who want to have backup copies of games from their cartridges.
However, Nintendo itself has protection against copying cartridges. Each Switch cartridge has a unique ID. And if the copy and the original game with the same IDs are online at the same time on different consoles, this will be a violation of Nintendo's license and both users will receive account bans. Therefore, as long as a copy made by legal users is used by them, problems should not arise. Except in cases where local legislation does not provide for copying legal games, even for yourself.
The MIG-Switch manufacturer itself does not approve of the use of its device to copy games that are not legally owned by users. In addition, the creators state that it is not yet possible to copy games purchased from the Nintendo eshop digital store.