## Interleaved 2 of 5 (ITF)

Interleaved 2 of 5 is a continuous barcode. Its character set is '0' to '9'. The number
of characters should be even. The check character is optional and not implemented. You
can always integrate it into the data (last digit) should you need it.
The following default value is used:

- wide/narrow bar ratio = 3

## Interleaved 2 of 5 (ITF) with Check Digit

This is Interleaved 2 of 5 with a modulo 10 check digit. Some applications, for example, EAN-14, use this. The number of digits
supplied should be odd so that the total of number will be even after the check digit is added.