Interleaved 2 of 5 Introduction

The structure of Interleaved 2 of 5 is as below:

As for Interleaved 2 of 5 size setting, two factors should be considered: barcode width and height.

Please get details from Interleaved 2 of 5 size setting instruction.

Interleaved 2 of 5 encodes:

• 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

Characters are encoded as pairs in Interleaved 2 of 5. The adjacent two characters are encoded into a unit of 5 interleaved bars and spaces, two of which are wide. The first numeric data is encoded into bars while the second numeric data is encoded into spaces. Thus, an even number of digits are always required for Interleaved 2 of 5. As for an odd number of characters, add a zero before the first digit or use five narrow spaces in the last digit.

Interleaved 2 of 5 Mod 10

Interleaved 2 of 5 Mod 10 is an optional check character, which is added as the last character in the bar code. When it is used, a zero should be added as the leftmost character since interleaved 2 of 5 is even number length.

Bearer Bars

Bearer bars are optionally included in case of a partial scan, shown as a rectangular frame around the bar code or two perpendicular bars at the top and bottom of the bar code.

Several industries or companies defined their own standards based on Interleaved 2 of 5 barcode symbology.

• ITF-14
• Identcode
• Leitcode