Matrix 2 of 5
Matrix 2 of 5 is a linear 1D barcode. Matrix 2 of 5 is a self-checking numerical-only barcode. Unlike the Interleaved 2 of 5, all of the information is encoded in the bars; the spaces are of a fixed width and used only to separate the bars. Matrix 2 of 5 is used primarily for warehouse sorting, photo finishing, and airline ticket marking.