It never worked very well on the DSi—which is a shame, since I really liked the game that used it (Looksley's Line Up). The DSi camera is really low resolution

It never worked very well on the DSi—which is a shame, since I really liked the game that used it (Looksley's Line Up). The DSi camera is really low resolution (0.3 Megapixel). I've never seen it ported anywhere else, and I don't know if any emulators will run it. (It will run on the 3DS, but the camera is in a different place, and the camera placement is pretty essential to how the game works).