EAN-130732995031317   EAN-13 barcode 0732995031317
UPC-A732995031317   UPC-A barcode 732995031317
Product NameTasso Elba Men's Banded Collar Linen Shirt, Created for Macy's
Created06-11-2021 4:54:50pm
Modified06-11-2021 4:54:50pm
MD5e75e9acb1cb6dc483316f1752bfb0533
SHA256d390847e5d9f506a8e6f8cd4222b39393ff7791f15d39c9d8d4623bf77c68f2a
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Query Time0.0048780

Article of interest

Code 128 is a high-density 1D barcode symbology. This barcode set makes use of the entire 128 ASCII characters which include letter, number and symbols.

Code 128 Barcode

As with all barcodes, there are indicators to identify where the barcode starts and stops. These are marked in yellow below. Code 128 also has a check character which has been marked in green. The remainder of the barcode is the data being encoded. The text below the barcode is optional and is for human consumption in the event the barcode can't be scanned or if people also need to know what the code means.

Code 128 Barcode

Each character in the barcode symbol is composed of three bars and three spaces. Each bar or space must range from 1-4 units and the sum of all the width of all bars must work out to an even number. The stop marker is special because it adds an extra bar of 2 units at the very end (4 bars and 3 spaces). There are three different start markers to to identify which code set is being used. To represent all 128 characters, the code sets can be within a single barcode as needed by using control characters 98-101 (depending on the code set).

The check character is calculated by summing the value of each character and multiplying it by its position. The start character is also part of the sum but is added without weight (multiply by 1 just like the first encoded data character) then when you have the sum take the modulo 103 remainder. This gets a little more complex when mixing modes within a single barcode.

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