Powersaves is basically a cheat device you hook up to your computer, then use the device to transfer codes from the web onto my computer. It's a cheat thing, that's legal. I bought it at Target c:
It's been out since 2013? It's the successor to the Action Replay, which was the DS version of the cheat device (Powersaves is made by the same company, just for the 3DS).
They tend to cost a bit. I know there's one big-name one you can get for $19.99 at places like Walmart. (I don't want to name the specific product in case it's not allowed. You might have an idea of what it is, though; it has DS and DSi versions and was a cheat code device on both platforms.)
Oop, never noticed the product was actually named.
It's pretty good though. I used to mess around with Diamond all the time using it and it had some pretty cool effects. Anyone tried cutting from Twinleaf to Hearthome by running through the walls?
My brother ran all the way from Twinleaf Town to the champion in a few minutes, challenged her, with the cheat on that prevented his Piplup from losing health, and after 2 hours, beat her.
I remember I once used it to get all the PokéWalker routes in my copy of HeartGold. It actually works! The coding in the pedometer must be universal between regions.