Show HN: An interactive demo of QR codes' error correction

https://news.ycombinator.com/rss Hits: 11
Summary

Every QR code has built-in error correction. This means that they can still be scanned even if they are damaged, like when a corner is covered or torn off, or when they get drawn on. Pick any QR code to learn more.

First seen: 2025-04-29 21:25

Last seen: 2025-04-30 07:26