I'm streetpassing with the whole world
I got a raspberry PI modelB with spillpass v1.6 on it as streetpas relay, it cycles every 8-10 minutes between 12 known mac's of Nintendo Zones, i get people from USA, till China etc....
(Ow, and yes the few kids i know in town with a 3DS, when they pass my house with there 3DS can streetpass with meit's not myself between my 3ds systems)
[EDIT]
When streetpassing outside, when you meet real people, you don't have to be affraid to get an update! it connects to other systems, but not to Internet, unless you configure the internet settings to make connection with your 3DS, you don't need internet to streetpass.
Just check it yourself in the top left corner of your system, when the WiFi switch is on and you are connected to your internet, it says "Internet", when you leave your house and it loses the WiFi signal, it switches to "Streetpass"
Assuming, like you say, you want to go out and meet real people with 3DS systems so you can streetpass, your first question is not needed, as long as you don't configure other WiFi AP's in your 3DS from outside (public WiFi)
HomePass is dumb, it takes any fun out of streetpassing. I can get every country/region/puzzle piece in a few days with HomePass... whats the point of that? Just hack the game to have 99999999 streetpasses and all puzzle pieces and all regions... same difference.
Completely wrong on leaving the house. I dunno about Belgium, but in USA we have a NintendoZone.. its everywhere... like on every corner... if you read any of the posts above you would see that I already said that if you have no Wifi configured your 3DS will connect and download the update when you are out and about the town. Every corner has Nintendo Zone... literally every corner. Every McDonnalds, every Starbucks, every Cellular store, almost every chain retaurant/store has it. So you delete all WiFi settings, turn on Wifi and go outside... 5 minutes later you will have the update.
Even if you delete the nag, you will have to do it again in 5 minutes...
