The symbol comprises the following elements:

• Leading quiet zone

• Start pattern (narrow bar, narrow space, narrow bar, narrow space)

• One or more pairs of symbol characters that represent data (including an optional check digit)

• Stop pattern (wide bar, narrow space, narrow bar)

• Trailing quiet zone

Deutsche Post Identcode encodes a string of 11 or 12 digits, as follows:

• Two-digit mail center distribution identifier

• Three-digit customer code

• Six-digit delivery identifier

• One-digit check digit (optional)

Deutsche Post Identcode imposes a format on the human readable interpretation that includes periods (which are not part of the barcode symbol).

This symbology supports all numeric digits (0-9).

Deutsche Post Identcode contains an optional check digit that is based on the modulo 10 (mod 10) algorithm.