Known also as Ames Code, NW-7, Monarch, 2 of 7, Rationalized Codabar.
Codabar was developed in 1972 by Pitney Bowes, Inc.
This symbology is useful to encode digital information. It is a self-checking code, there is no check digit.
Codabar is used by blood bank, photo labs, library, FedEx...
Coding can be with an unspecified length composed by numbers, plus and minus sign, colon, slash, dot, dollar.