The Interleaved 2 of 5 barcode is a numeric-only code that’s commonly used in warehouse and industrial applications. Also known as ITF-14/SCC-14, Interleaved 2 of 5 is considered a high-density barcode since digits are encoded in pairs or “interleaved.”
The first digit is encoded in five bars, two of which are wide and two of which are narrow, and the second digit is encoded in the spaces which occur between these bars. Interleaved 2 or 5 codes can be as long as necessary to encode specific data, making them ideal for large-scale industrial applications.
Because the encoded digits in Interleaved 2 of 5 occur in pairs, the code must contain an even number of digits. If an odd number of digits occurs, a leading “0” is added to the first code value. While Code 39 is also a potential option for industrial barcoding, many companies choose Interleaved 2 of 5 since it’s possible to encode the same amount of data in approximately half the required space.