How Do QR Codes Work? Why These Tiny Squares Hold So Much Data
Ever wonder what's actually happening when your phone scans a QR code in under a second? It's not just a fancy barcode — there's surprisingly clever engineering packed into that tiny square. In this video, we break down exactly how QR codes store data, why they still work when damaged, and the hidden math that makes it all possible.
🔲 From factory floors in 1994 to 6.8 billion scans in 2022 — here's the full story nobody explains.
📌 Timestamps
00:00 — Introduction
00:33 — What is a QR code? The origin story
01:14 — Why QR codes hold so much more data than barcodes
01:34 — Anatomy of a QR code: finder patterns, timing patterns & alignment
02:24 — Reed-Solomon error correction: why damaged codes still scan
02:26 — What is masking — and why codes are deliberately scrambled
💡 If this made you see something ordinary in a completely new way — that's exactly the point.
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