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3.3.16. Options for POSTNET
POSTNET (Postal Numeric Encoding Technique) is a height modulated symbology
with a number of fixed lengths.
For string format see figure 3.38.
Fixed data capacity:
Numeric data: 5 / 6 / 9 / 11 characters
Additional data: 1 check digit
Checkdigit:
The start and stop pattern consist of a fixed single frame bar which is not unique
inside the code. It is not transmitted. The check digit is calculated and transmitted
with the barcode data.
Encodable characters:
digits 0 up to 9
3.3.17. Options for GS1 Databar
GS1 Databar is formerly known as RSS family including the RSS-14 group. Support
for GS1 Databar options is reader dependent.
Maximum data capacity:
GS1 Databar and GS1 Databar Limited: Application Identifier "01" and 14
digits.
GS1 Databar Expanded: 74 numeric or 41 alpha characters
Checksums:
The GS1 Databar family uses a mandatory checksum.
GS1 Databar uses a modulo 79 checksum,
GS1 Databar Limited uses a modulo 89 checksum
GS1 Databar Expanded uses a modulo 211 checksum.
The checksum is always calculated and is not transmitted.