This is the Eye-Fi Eye-fi is a standard SD memory card with a twist: it also has a built-in 802.11 b/g/n wireless card, for wireless communication with the PC, and, possibly, wireless hubs, routers, hotspots, connection points... you see what I'm getting at. So far it's being advertised as a way to transfer pictures from your digital photo camera to your PC wirelessly, but since it's basically an SD card (doesn't even require the fast SDIO bus) and backwards compatible with any SD-using device, it could be used in any flashcard that uses SD cards as memory (M3 SD Slim, GBAMP V2 SD, Supercard SD, etc.), and serve as a second wireless card on the DS, or even as a wireless card for the GBA (that would be cute ). Since the card only transfers the data written to its flash memory, and doesn't serve as a "live", "real time" Wi-Fi card, all packets would have to be written to the card and then the card would transfer them. It would be slow and battery-consuming, but let's face it, the wireless on the DS is slow and battery-consuming as it is Discuss.