qrxfer | Transfer files from Air gapped machines using QR codes

qrxfer is a Python library. qrxfer has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. However qrxfer build file is not available. You can download it from GitHub.

QRXfer is one of those "I had to give it a try" ideas. The basic idea is that it is possible to play back QR code encoded data to a receiver that may be able to reconstruct the data and reproduce the file that was originally sent. Think about an airgapped machine being able to generate the QR codes, you recording it with your phone, and playing it back to the receiver later. I tested 2 main scenarios. The first was starting the listener on my laptop with the webcam, and the emitter on another pc (so 2 screens facing each other, not connected in any way). This method was the least error prone as both the sender and receiver were standing still. The second was recording the emitter with my phone, and then placing my phone in front of the webcam with the receiver running. This was obviously much more error prone with me not being able to hold the phone still ;).