2D and linear barcodes have the same limitations for scanning from manufacturing to point of sale. 

To ensure smooth scanning stick to the following guidance:

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High contrast is key - use dark colours on a light background, with black and white being the best combination

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Avoid red or orange as the dark colour elements in your barcode - most scanners use a red light and will not pick these colours up

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Refrain from reverse reflectance (inverting the light and dark modules)

Traditional scanners may not facilitate this setup as EAN/UPC barcodes are never inverted. For this reason, anticipating that these barcodes will be scanned at tills in shops, reversing QR colours is not recommended. 

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