Nintendo 3DS Has Friend Codes, But Only One Friend Code

Confirming what Famitsu prematurely revealed in their Super Street Fighter IV 3D Edition article, the Nintendo 3DS does have friend codes. However, you won’t have to register separate friend codes for each game.

There’s a master system friend code and you only need to share that with a buddy. If you communicate with another Nintendo 3DS system locally, that friend code exchange is instantaneous.