jabcode

When it comes to data archival, I always wondered if we can get paper to reach a nice density. Wikipedia says around 3MB per 8x10 page, but I wonder is JAB code can reach a higher density. https://github.com/jabcode/jabcode/issues/62 People talk about dataglyphs, but the density doesn't appear very high.

Hello all, You've seen QR codes, maybe Microsoft HCCB [0], maybe jabcode [1] – well, here's a prototype of something new for the pile. :) I saw txqr [2] a while back and was impressed, but also curious about how much throughput was possible with animated bar codes. I may have gotten carried away in my research into the question. cimbar is a single and multi-frame color barcode format using reed solomon (for now) and wirehair [3] for error correction. Files are encoded into an animated series of bar codes drawn to the display. Files are decoded by an Android app [4] with its camera pointed at the cimbar code. This works with all antennas off, e.g. in airplane mode, because it's only using the visual data channel. I ported the encoder to wasm, because I could: https://cimbar.org Sustained transfer speed is currently on the order of 800 kilo

To copy a comment from a Github issue [1], comparing the different implementations: - CRONTO, PM-Code and HCCB and AuthPaper are proprietary. CRONTO has attracted some usage mainly by banks, PM-Code looks like vaporware, AuthPaper seems inactive and HCCB is dead [2]. - CobraKing seems to be a 2012 research project, unmaintained - HCC2D seems to be mainly academic exploration Papers and results similar to HCC2D pop up periodically (i.e. [3]), but unfortunately nobody has released any (experimental) source code. It quite frustrating. For example, AuthPaper implemented their solution on top of ZXing, but they never contributed back. They apparently thought they could make some money out of it, but now that their venture is inactive, their ZXing modification is in limbo as well. From my one-hour research, that makes JAB Code the only actually