There are several existing projects that can transfer files solely by QR-code, with absolutely no other network or data connection:
license: BSD 3-clause license
Linux C encoder, Android/IOS decoder (uses zbar library)
it includes several other significant additions (two-way comms via keyboard, HDMI capture card, and IP networking!?)
lots of YouTube videos
Fath, Thilo, Falk Schubert, and Harald Haas. "Wireless data transmission using visual codes."
2.5 (2014): 150-160.
Is the code for this available anywhere?
contact him and ask?
hasn't published anything
since getting his thesis.
thesis for Thilo Christian Martin Fath (2014)
Schubert, Falk, Thilo Fath, and Harald Haas. "Coloured video code for in-flight data transmission."
Computer Vision Systems
. Springer Berlin Heidelberg, 2013. 42-51.
transfer rate: 54 kbps (b&w), 120 kbps (color)
, no code or paper
transfer rate: 43 kBs