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Barcode reader HS code and import paperwork: why classification depends on the configuration, who decides it, and the document set that delays shipments.
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Barcode size is set by module width, not the rectangle: X-dimension, quiet zones, print path and substrate limits, and who owns a failed code.
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When DataMatrix and QR reach a 1D-only site: why lasers can't follow, how to survey codes, and which stations actually need a new device class.
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