QR Code Pattern - Search Videos

QR Codes — “How they store so much info”

YouTubeEveryday Tech

QR Codes — “How they store so much info”

QR codes are tiny data grids. Those big corner “finder patterns” help your camera lock on; the smaller “alignment” marks keep it straight. The black/white modules encode bits that represent text, URLs, or Wi-Fi credentials. A mask pattern makes the dots easier to read, and Reed-Solomon error correction (levels L/M/Q/H) lets the code ...

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