This 1D barcode is almost identical in structure to Code 39 but restricts the number of potential alphanumeric characters. The symbol structure for Code 32 includes eight characters which represent numeric digits, plus a check digit. If there are fewer than eight characters needed for encodation, padding characters are added to ensure the code is of sufficient length.
Code 32 barcodes use five bars and four spaces for each character. Six of these character elements are wide and three are narrow, and the barcode also includes a check digit that uses the modulo 10 algorithm.
Despite its limited application, Code 32 offers several advantages including high reading security and unique formatting, ensuring it is unmistakable when dealing with multiple barcodes. This barcode contains five key formatting elements:
- A Leading Quiet Zone
- One Start Character
- All Symbol Characters and One Optional Check Digit
- One Stop Character
- A Closing Quiet Zone