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PDF 417 Twin Code
PDF417 twin code is 2 PDF417 barcodes paralleled vertically or horizontally. Two of them must have the
same direction and similar specifications and be placed closely together.
There are 3 options for reading PDF417 twin codes:
Single PDF417 Only:
Read either PDF417 code.
Twin PDF417 Only:
Read both PDF417 codes.
Both Single & Twin:
Read both PDF417 codes. If successful, transmit as twin PDF417 only. Otherwise, try
single PDF417 only.
** Single PDF417 Only
Twin PDF417 Only
Both Single & Twin
Transmission order of twin code
Order 1:
Transmit the one containing more information first.
Order 2:
Transmit the one containing less information first.
** Order 1
Order 2