MIG Flash

A physical cart that uses the unique ID tied to individual game carts to convince the Switch a genuine cart has being used. This is a legal product that allows collectors of physical products to quickly switch between their games without having to manually swap out game carts.

The MIG can potentially be abused and used in an illegal capacity, but not without risk: someone could purchase a game cart, use the ID on their MIG, and then return the game to the place of purchase. If that returned game then makes its way to the second hand market and both people go online, both people will get banned by Nintendo.