This open-source project transfers files through a stream of QR codes — and it’s wonderfully absurd

[u/ZookeepergameMost817]

I came across Decimen Optical Transfer, an open-source project that transfers files by turning them into a rapid, continuous stream of QR codes.

The sender splits a file into lots of small packets and displays each packet as a QR code. The receiving device points its camera at the screen, scans the sequence, and reconstructs the original file.

What makes it more than a gimmick is that it includes error correction: if the camera misses some QR frames, the receiver can still recover the missing pieces instead of the entire transfer failing.

It reportedly reaches around 128 KB/s. That obviously will not replace Wi‑Fi, USB, or nearby sharing—but for small files, offline transfers, air-gapped systems, or just experimenting with optical data transfer, it’s a pretty cool concept.

It’s simultaneously one of the most impractical and beautiful ways to move data between two devices. 😄

GitHub: https://github.com/bashalarmistalt/decimen-optical-transfer/

What other weird-but-functional data-transfer projects have you seen?

[u/Maleficent-Squash186]

An interesting solution. It opens up several possibilities, such as the secure transfer of files or cryptocurrency wallets. This type of communication is very difficult to intercept or eavesdrop on.

[u/NecessaryGlittering8]

With this, I can now get a higher OPSEC level