To use this feature, your 3DS must be modded with custom firmware and have the application installed. Get ANY 3DS Game Using a QR Code #3ds

The system is a specialized remote installation feature used on modded Nintendo 3DS consoles. It allows users to download and install software (typically in .cia format) directly from the internet by scanning a QR code with the console's camera, bypassing the need to manually transfer large files to an SD card. Core Functionality of FBI QR Codes

: When scanned, the QR code provides a direct URL to a .cia file. FBI then downloads this file over Wi-Fi and installs it to the internal storage or SD card.