Interleaved 2 of 5 Barcode: Read All About It!
The name Interleaved 2 of 5 was derived from the way the bars and spaces in the barcode were constructed—the first digit is encoded in the five bars, and the second digit is encoded in the five spaces, interleaved with them, thus, two out of every five bars or spaces are wide. In contrast to most barcode symbologies that encode information only in the black bars, the Interleaved 2 of 5 barcodes encode information as digits in both the bars and the spaces, meaning that they are compact and can store more data.
Within the Interleaved 2 of 5 barcode, there are SSCC (Serial Shipping Container Code) barcodes that provide specification, which is available from the GS1. ITF-14, SCC-14, DUN-14, and EAN-14 are all different types of interleaved 2 of 5 barcodes.
Like other barcode symbologies, Interleaved 2 of 5 uses a check digit. To calculate the check digit of an Interleaved 2 of 5 barcode, simply add the odd digits and multiply the sum by 3, then add it to the sum of all the even digits. From there, the check digit is the number needed to raise the total to the next multiple of 10.
Learn more about the Interleave 2 of 5 Barcode and other barcode symbologies here.