 Codabar, also known as Codeabar, Ames Code, or Code 2 of 7, is a binary symbology used in some health care applications and library book tracking applications. As one of the very first bar code symbologies, there are many other uses for Codabar that are still active. Codabar is also known as NW-7 in Asia. The name refers to the character structure — 7 elements, each of which is either wide or narrow. There are 4 bars and 3 spaces per character. Codabar has been used in marking blood bags, and parcel tracking numbers. |
| Type | Linear (1D) |
| Character Set | A B C and D (only used as start and stop characters), the numbers 0 through 9, some punctuation characters, including dash, slash and the plus sign. |
| Example of Application Standards | None |
| Non-standardized applications | FedEx Airbills, Blood Banks Forms, and Library book tracking. |
| Key features | Some Codabar standards require a check digit, while others do not because the code is self-checking. |
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