TIL how QR codes work
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The Quick Response code was invented by a subsidiary of Toyota to track parts across the manufacturing process.
How QR codes work:
The full post is fantastic. QR codes
Finder Patterns #
Timing Patterns #
This row helps them know how large the QR code is.
It's stored twice so its readable even when QR code is partially obscured. (You'll notice that this is a recurring theme.)
Error Correction #
The Data #
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Tagged: barcode