The Codabar was developed in 1972 by Pitney Bowes, Inc. It is a discrete, self-checking symbology that may encode 16 different characters, plus an additional 4 start/stop characters. This symbology is used by U.S. blood banks, photo labs, and on FedEx air bills.
Barcode's Properties
The following properties should be set to specify a particular barcode of the Codabar type:
Start Stop Pair This property is used to specify the first (start) and last (stop) symbols used to code the Codabar barcode's structure.
Wide Narrow Ratio This property is used to specify the density of a barcode's bars. The value assigned should be between 2 and 3, inclusive.