Code 11, also known as USD-8, was developed as a high-density numeric-only symbology. It is used primarily in labeling telecommunications equipment. The symbology is discrete and is able to encode the numbers 0 through 9, the dash symbol (-), and start/stop characters.
Effective in 1998, 4 State barcodes are used to allow Australia Post to sort incoming mail via a barcode read from letters (those barcodes are totally different from the 4 State barcode used in Singapore). There are three different types of barcodes corresponding respectively to FCC values 11, 59 and 62. BarDIMM only needs the DPID and Customer information, and generates automatically all the other information like the FCC or Reed-Solomon checksum.