Code 2 of 5 Interleaved
Interleaved 2 of 5 is a numeric-only barcode generally used in warehouse and industrial applications. The information must consist of an even number of digits.
Each data symbol 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 symbol with the bars of the other.
Valid characters: "0".."9"