Interleaved 2 of 5 is a high-density numeric symbology. Some applications require a modulo 10 checksum digit at the end of the message. Interleaved 2 of 5 uses an "interwinded" pattern to create barcodes and consequently it requires the data length to be even. Regardless having a checkdigit or not, the whole length of the data must be even. Barcode ActiveX appends digit 0 at the end of the message when it finds that the data length does not meet the requirement (before the check digit when check digit is required).

To enable the check digit, set property I2of5OptionalCheckDigit to TRUE.

Interleaved 2 of 5 is widely used to encode Shipping Container Code (SCC-14), which contains exact 14 digits. When it is used for encoding SCC-14 numbers, it is also called ITF-14.

You can add bear bars to the barcode by setting BearerBars to TRUE.