Though StreetPass has proven to be extremely popular, you're much less likely to directly cross a fellow Nintendo 3DS user stateside than in the console's home country of Japan. But thanks to a new update, you'll now be able to pick up Mii avatar buddies via StreetPass Relay. When a 3DS user crosses a Nintendo Zone hotspot, their data is automatically stored and passed on to another 3DS owner who hits the same