Barcode encyclopedia : Symbology pdf417macro
Symbology is same as PDF417, but with these additional features :
- structured append, The PDF417 standard allow user data to be spread across several symbols. This mihgt be done for reasons of appearance and geometry, or because the data is too large to fit info a single symbol. The technique is known as Macro PDF417.
- FileID, Segment Index, Segment count (used for structured append)
- Fields TimeStamp, Sender, Addresse, FileSize, CheckSum