Semi-related, there was a recent puzzle (part of an offshoot of the 2023 Mystery Hunt), which required you to decipher a really broken QR code by hand (too far for error correction to work). We ended up looking at all the guides listed in this comment section, and while they were useful, none were super great. It's always nice to have more detailed articles like this, and this one definitely seems very polished!

Here's the puzzle for anyone curious, though the QR code deciphering comes in the 2nd half: https://puzzles.mit.edu/2023/abcde.puzzlefactory.place/puzzl...