DS Handheld to be Region Free
Thanks to GamingHeadlines for the news that DS games are not going to be region restricted. "Although this news may not specifically cater to American and Japanese folks, it certainly gives us Europeans the benefit of importing our DS systems from abroad..." I certainly think it caters to US gamers. Imported Japanese games can lead to wonderful things.
Sidebar: will it really be cheaper for Europeans to import their systems from Asia as opposed to North America, though? Anybody?
Condemnant quod non intellegunt.
Just physically change the structure of the cartridge a tiny bit for each region so it doesn't fit, by subtracting or adding a notch in the corners, forcing people to either use awkward adaptors ( doubly awkward for a portable platform ) or physically destroying the complementing notch in their gameboy, most likely voiding their warranty. This level of discouragement is probably enough.
My hunch on why they don't bother with any lockouts is that there isn't as much of a blockbuster game driven economy with gameboy games. There is very rarely a game that comes out that everybody goes nuts and has to go buy like on console systems. Pokemon would be the closest thing to that, and it's extremely language bound. Furthermore, it's very link oriented, discouraging people from buying a game they won't be able to link to hardly anybody with later.