On a , some custom cheat software allowed users to scan QR codes to load massive databases of game hacks (like infinite health, maximum money, etc.) directly into the cheat device's memory, saving the user the trouble of typing in hundreds of lines of code. This trick bypassed the manual typing and streamlined the cheating process.
Downloading copyrighted Nintendo DS games via QR codes falls under the same legal framework as traditional ROM downloading. It is generally considered copyright infringement unless the user owns a legitimate physical copy of the game and creates their own backup. nintendo ds games qr codes