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What is a QR code if not a 2D barcode?

• randyrand 3y ago
  barcodes use vertical bars
  • ThePowerOfFuet 3y ago
    So confidently incorrect.
    • deleted 3y ago
      [deleted]
  • karmakaze 3y ago
    2D barcodes are covered in https://en.wikipedia.org/wiki/Barcode https://en.wikipedia.org/wiki/Barcode Sort of like how one might say 2D arrays.
    • randyrand 3y ago
      > A matrix code, also termed a 2D barcode (although not using bars as such) or simply a 2D code, barcode is not the preferred term because they don't use bars. A QR code is called a matrix code.