Deutchen Post
The German Identcode and Leitcode symbols, used by Deutsche Post, are built on the Interleaved 2 of 5 barcode but apply their own check digit calculation.
Introduction
The I-2 of 5 barcode forms the basis of the German Identcode and Leitcode symbols used by Deutsche Post. These are 12- and 14-digit barcodes respectively, but they use a different check digit calculation from the standard I-2 of 5 symbol.
Note that spaces and periods are removed from the strings supplied for I-2 of 5 barcodes before the barcode image is created, so the correct layout for Identcode and Leitcode text may be used to create the symbols.