Overview
The International Standard Serial Number (ISSN) barcode encodes numbers to identify printed or electronic periodicals. The barcode is based on EAN-13.
Encoding
Codeable characters: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. You can use an additional pipe("|") to encode supplemental data. Refer to remarks below for additional information.
Structure
Requirements
The barcode must contain 12 digits plus a checkdigit. Toolkit automatically calculates and appends the checkdigit if it is missing.
Remarks
The barcode format allows for additional supplemental data, which you append to the end of the encode value using a pipe character ("|").
For example, if you specify "901236788122" as your 12-digit value and "02" for your 2-digit supplemental value, you would change the value to "901236788122|02"
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