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Interleaved 2 of 5 (Code 25, I2of5, ITF, I25)
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Interleaved 2 of 5 is a numeric-only barcode widely used in warehouse and industrial applications. The data must consist of an even number of digits.

Each data character is composed of 5 elements, either 5 bars or 5 spaces. Of these 5 elements, two are wide and three are narrow. Adjacent characters are interleaved, alternating the spaces from one character with the bars of the other.

Note on the "Code 25" name": Interleaved 2 of 5 is sometimes referred to as Code 25. This is not a precise term, as Code 25 is also sometimes used to mean Standard 2 of 5 or Industrial 2 of 5.


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