This is the AIM specification for Interleaved 2 of 5. The most current specification for Interleaved 2 of 5 can be found in the ISO standard at Unless you are required to have the AIM document you are urged to use the ISO standard to ensure you have the most current and complete information.

Interleaved 2 of 5 (also called I-2/5 and ITF) is suitable for encoding general purpose all-numeric data. Reference symbology for UCC/EAN Shipping Container Symbol.

Character encodation, reference decode algorithm and optional check character calculation are included in this document.

This specification is intended to be significantly identical to corresponding Commission for European Normalization (CEN) specification.