Streetpass is a feature present in every Nintendo 3DS system that allows users to exchange data from games & applications that the two own. It is on regardless of whether the 3DS is in sleep mode or not (though the system itself must be on), and automatically acts when another 3DS user walks within the console's range. With it, players can acquire new features in games that they own (even if the game's card is not presently in the 3DS card slot) and obtain the Miis of 3DS users that walk past them. If one wishes, they can turn the feature off completely or assign the games that they want it to work with. Several games have made use of this function in unique ways. Other content that can be transmitted include puzzle piece for Puzzle Swap, messages from the user (in addition to their favorite game on the system), and their most played song with Nintendo 3DS Sound. Via Streetpass Mii Plaza, you are able to acquire new puzzle pieces for your puzzles. You can even use hero's from users you've met via Streetpass, which may help you to get through Streetpass quest! (I personally find this game ridiculous because it's nearly impossible for me to get through every enemy, lol!) And a lot more for other games and such. As of what is explained above, do you use Streetpass? Do you think this is useful? Do you think this is a great feature for those who want to meet new friends via Streetpass? I really like Streetpass, I usually bring my 3DS with me when I'm going out and see if I meet new people through Streetpass. My recent record is 6 people, residing from different provinces! So with that all being said, what are you thoughts on Streetpass for 3DS? Post below!