Codabar is a variable length symbology capable
of encoding 16 characters within any length message.
Codabar can encode six special alphanumeric characters,
capital letters A through D, and all numeric digits.
Codabar symbology for any new applications today should
not be considered except under unusual circumstances
because it is limited and out-dated. Listed below are
the options for the Codabar symbology.
A modulo 16 check character can be used to enhance
data security for Codabar symbols. When this option
is selected, the last digit of the symbol is assumed
to be the check digit, and it is compared to a calculated
check digit to verify the symbol.
When this option is selected, a "D" stop character
is used to indicate that the data from the symbol should
be concatenated with data from an adjacent symbol with
a "D" start character. This option can concatenate
any number of Codabar symbols in a row up to the maximum
message length. The "D" characters are omitted.
The traditional names ascribed different start
and stop characters. The start characters are "a", "b", "c",
and "d". The stop characters are "t", "n", "*", and "e".
When deselected, the start/stop characters are "A", "B", "C",