Talks to Watch

I built a QR code with my bare hands to see how it works

9.7M views · Sep 30, 2024 · 35:13 · 1 HN recommender · 3 mentions · discussed 2024–2025

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.

Why Hacker News points people here: HN points to it as a recent, well-made explanation of QR code structure and error correction.

“Derek Muller just did an interesting take on QR codes and their history”HN comment, 2024

What Hacker News said 3

RecommendsnhatcherOct 2024

“Derek Muller just did an interesting take on QR codes and their history”

Interesting take on QR codes and their history

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Derek Muller just did an interesting take on QR codes and their history on his popular channel veritasium: this video

Cites itthrow0101cNov 2024

“Recent Veritasium video on the topic”

Recent Veritasium video on QR codes

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Recent Veritasium video on the topic, "I used to hate QR codes. But they're actually genius": * this video

in “Creating a QR Code step by step” · view on HN
Cites itgukovJun 2025

“Here's a Veritasium video on QR codes”

QR code degradation tolerance

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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

in “Show HN: Qrkey – Offline private key backup on paper” · view on HN