Methods and apparatus for bar code conversion

Systems and techniques for detecting and decoding bar code data and transferring the data to a host system. A bar code scanner detects and decodes a bar code and passes the bar code information, including bar code format information, to host system. The bar code scanner detects indicia that may appear in a bar code and responds as indicated by the indicia. One of the available responses is to transfer bar code data to a host system in a form consistent with a format indicated by indicia appearing in the bar code, but different from the format in which the bar code actually appears.