I was looking for a way to scan a QR code on my mobile using my laptop, but couldn't find a perfect solution. So I ended up making this tool.
Repo: https://github.com/sayanarijit/qrscan
Language: Rust
Supported platforms: Currently tested on Linux, but should also run on Unix, Linux, Mac, Windows
I just published this, so expect a few bugs here and there. If found please report.