activePDF Toolkit 2011 API Reference
Interleaved 2 of 5
Appendices > Symbologies > Numeric Symbologies > Interleaved 2 of 5

Glossary Item Box


Other Names

ITF, ITF-14, I 2 of 5

Overview

Interleaved 2 of 5 is a continuous, high-density, variable length symbology for encoding numeric values. Distribution industries are the primary users of Interleaved 2 of 5.

Encoding

Interleaved 2 of 5 can encode 10 digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9.

Structure

Interleaved 2 of 5 has the following structure:
  • A start character with format bar space bar space.
  • Encoded value.
  • Checkdigit - Default check digit method: None. Recommended check digit method: Modulo 10.
  • A stop character with format bar bar space bar.

Requirements

Interleaved 2 of 5 encodes 2 characters in a unit of 5 bars and spaces. The symbology encodes even position characters as bars and odd position characters as spaces. As a result of the encoding, the total length of the digits to encode must be even in length. If a check digit is used, the total length is odd.

If the barcode does not meet the length requirement, Toolkit automatically appends a 0 (zero) to the encoded data.

Remarks

You can use the I2of5OptionalCheckDigit property to set or retrieve the checkdigit. Toolkit will automatically calculate and append the check digit in the correct location, based on the encoded value.