Switch on StreetPass and pass by another person who has a Nintendo 3DS system to receive items and to make wonderful things happen in your Mystery Boxes!
Encounter a new Mii using software that supports StreetPass, such as StreetPass Mii Plaza, and you may receive a present in Toad House.
Find another SUPER MARIO 3D LAND player and you can swap the last Mystery Boxes that you each played. The Mystery Boxes you receive are special: not only do they contain lots of 1-Up Mushrooms, you'll be certain to get a Star Medal too!
StreetPass is a communications feature that's activated whenever you walk past someone else who's carrying a Nintendo 3DS system. On the street or on the train, your Nintendo 3DS system will automatically find other systems and exchange information with them. Information is exchanged for up to 12 software titles at a time (including built-in software). If you have a title registered on your Nintendo 3DS system, information for that title will be exchanged, even if its Game Card is not inserted at the time.