Nintendo can track application usage via the console's Activity Log , which syncs with their servers. While bans are rare for simply having homebrew, using these keys to access the eShop illegally carries risks.
It is required to decrypt NCCH and CIA files—the standard formats for 3DS games and applications. enctitlekeysbin 3ds top
Several popular homebrew applications rely on or interact with this file: Nintendo can track application usage via the console's