Higher error correction makes scanning undamaged QR codes less reliable

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QR error correction helps and hinders scanning

https://huonw.github.io/blog/2021/09/qr-error-correction/

A QR code can use one of four error correction levels. Higher error correction forces denser codes, but allows scanning in more situations. A trade-off!

QR error correction helps and hinders scanning

There is a discussion on Hacker News, but feel free to comment here as well.