: 001 Numerical information only, represented in Binary arithmetic.C: 010 Reserved for paper currency, including U.S. and foreign currency.D: 011 Alphanumeric, the full ASCII set of 128 (256?) characters, functions, etc., as specified by ANSI, using seven (eight?) BCB digit words.E: 100 Emulation of all EAN & UPC symbols, but with enhancements.F: 101 Product or document Seal of Authenticity