I built a QR code with my bare hands to see how it works
Veritasium1 HN recommender · recommended in 1 month, 2024–2025
explainer · general · evergreen · 2024–2025 on HN
Veritasium builds a QR code by hand to explain how it works. It covers the history of Morse code and barcodes, how QR codes encode data, why damaged codes still scan, and how safe they are.
HN points to it as a recent, well-made explanation of QR code structure and error correction.
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3 comments from Hacker News
Derek Muller just did an interesting take on QR codes and their history on his popular channel veritasium: ▶ this video
Yep, if I'm using a physical medium like paper I want to allow for some degradation. Here's a Veritasium video on QR codes: ▶ this video
Recent Veritasium video on the topic, "I used to hate QR codes. But they're actually genius": * ▶ this video