What's the use of 3ds ARcard?

Ar card corresponds to a picture and has certain functions. The burn screen card will be used permanently, but you can't play games on 3ds at present, because 3ds hasn't been cracked yet, R4 50-60, dstwo 200 or so. 3ds rarely refurbishes machines, and the charger costs tens of dollars. Sd card is mainly used to store photos and download software online. When upgrading the burn-in card, power failure may turn brick. If you want to use a burn-in card, don't upgrade or burn it.