ISSN barcodes appear on serial publications, such as magazines and newspapers, for retail and inventory use. This symbology encodes an International Standard Serial Number.
- Serialized publications
- Scientific journals
What is the "Variant" field used for in ISSN barcodes?
See this third-party article for more information.
How do I add a 3-digit issue number to my ISSN magazine barcode?
Magazines use the ISSN symbology, which has an optional 2-digit extension for the issue number. Anything other than a 2-digit extension would not be valid.
Issue numbers in barcodes are not unique. A magazine published monthly would have issue numbers 01-12, while a weekly publication would have issue numbers 01-52. These issue numbers reset each year.