If so, then the patch he submitted builds upon my work! He fixed a line feed conversion bug that was present in Windows. I use Linux so I did not experience this issue.
I remember seeing that patch get merged but I didn't know about the whole video game context. This is amazing. I wrote the patch because I was trying to print a 4096 bit RSA secret key as a QR code. Awesome to see it getting used for something even more awesome.
Here are the links to my contributions and related pages:
ZBar used to automatically convert binary data to text when decoding 8 bit QR codes, mangling the data in the process. My patch adds the option to disable that, enabling the data to be extracted without corruption.
I also added the one shot feature to the ZBar tools to make it easier to use in automated scripts that expect exactly one output:
Storing secret keys as QR codes is an interesting application as well. I remember reading on here about a CEO who printed out a database encryption key as a base64 string and then couldn't type it in correctly when it was needed to restore backups. A machine-readable format definitely seems the way to go.
I just saw a video the other day about storing video games in QR codes where the poster submitted a patch for ZBar. Was that you?