The way in which this quoted sentence reads implies that a unique identifier is present in each copy of a DS game. If this is true then for everyone who uses the dumped copy of a game on the Internet, those people are all using the same game ID. Their friend codes will still be unique, because their DS IDs are still unique and the compound of the two IDs will still therefore be unique. But this is interesting. Because if the hash used to calculate the friend code is reversible, Nintendo can determine for each person who connects to Nintendo WiFi whether or not they are using a pirated copy of the game. But my question is whether or not this quote in Wikipedia is actually accurate or not. I find it hard to believe that every single copy of a game that is printed has a unique code built into it. Is this really true or not? If not, none of the above conjecture matters. If so, then this is a very relevant discussion topic.