To me it seems that it would be terribly easy to detect mod chip users without detecting the modchip itself. Wouldn't it be very easy for them to code the firmware to detect if an NTSC Wii successfully plays a PAL game or vice versa? The only way that can happen is with a mod chip installed. Even if you run Wiigion Free on a game to change it from PAL to NTSC, I noticed Brickblocker still detects the original source of the game as PAL, so the region free programs are not completely converting PAL to NTSC. Also the backup disks can vary in size from the original. Nero backups are actually larger than ImgBurn backups by a small amount(even though both play fine), so there is another variance from originals that can be detected. So is it just a matter of time before Nintendo makes an effort to stop the use of existing mod chips or are there limitations on firmware that would prevent them from detecting the obvious signs of a mod chip?