Prod.keys Nintendo Switch -

: They act as "master keys" for diverse security operations tied to the console. Why Your Emulator Needs Them

Here is the crucial part:

When you buy a Nintendo Switch, you are holding a piece of hardware that is locked down tight. The operating system, the games, and the save files are all encrypted—scrambled into unreadable code to prevent piracy and hacking. For the console to run a game, it needs to unscramble that code. prod.keys nintendo switch