Hi! I have a couple of questions
First, theres a lot of discussion about SRP. What's that? And how is it useful? I can't find an especific answer on the internet.
Streetpass Relay.
https://www.3dbrew.org/wiki/StreetPass#StreetPass_Relay
Used originally for supported Nintendo Zone hotspots, where, once connected to one, you would "register" yourself to it, and streetpass match with other users connected to it, without being remotely close.
Netpass allow for people who opt-in to this feature, to automatically check for Streetpass matches without having to open the app periodically or have it idle.
Pretendo also make use of that feature, but only restrict it to the user friend list for security reason.
Netpass does have reporting systems, moderation, and some counter-measures for malformated/maliciously Streetpass data.
Second: How do i "disconect" from the Netpass, like togling off from normal streetpass
One thing to point, is using Netpass, still allow you to use Streetpass, as normal. And even use the previously mentionned Pretendo SPR feature.
If you want to stop using it. Just wait until the selected virtual place in Netpass expire (Around 8/hours from the top of my head without checking) and it will not give you more Streetpass matches. Same goes for the SPR optional feature, as you still need to select a virtual location before hand in the app. You can also remove the Netpass SPR feature safely from the app once installed.
Also: Whats the function of the "Alley"?
The alley, is an optional option which allow you to request for specific streetpass game matches, for a couple of walk coins.
Let's say you want to find that one person who also has Centipede: Infestation as a 3DS streetpass game. You can "pay" for an Alley match, for Netpass to specifically match you with someone with that game.
You can use it only three time once you selected a virtual location. The first one is three, and the two other times require to pay with walk coins.
While you can totally cheat your walk coins, which is fine for that use, Netpass doesn't allow you to try to bypass the 3 Maximum alley use via changing your 3DS time.
You are welcome.