Code 93

Check digit: Two check characters. These two check characters immediately follow the encoded message itself and immediately precede the final stop character. - Automatically calculated by Barcode alpha software.
Use: non-retail environments/ health industry/ military/ Automotive
Length: Variable length
Supported characters: A - Z, 0 - 9, space, '-', '.', '$', '/', '+', '%'
In Barcode alpha premium version full ASCII (128 characters)
Class: Alphanumeric Symbology
Special notes: none

A bar code symbology that is discrete, variable length, and self-checking. It can be used interchangeably with Code 39 when higher density printing is required (allows labels to be approximately 30 percent shorter than Code 39).
The character set is the same as Code 39:
A - Z uppercase, 0 - 9, dollar sign ($), period (.), slash (/), percent (%), space ( ), plus, (+), and minus (-).
It can be extended to full 128 character ASCII by use of a four-character encoding scheme (only in Barcode alpha premium version).