Look I am not much of a expert on how to hack systems to play backups (actually, not at all); but I think you can probably avoid a modchip if someone was smart enough. 1) USB Cables- There must be a way to hack or alter the system through those. 2) SD Card- I know this has probably been explored, but couldn't you make something that could crack the protection and diguise it as an mp3 and run it in Excite Truck? 3) Disk exchange method- perhaps if you did some sort of a exchange like with gamecube PAL and NTSC games with backups, maybe while the system is turning on or off, you can bypass security? your thoughts?