Analyzing copyright information written in a predetermined position of an optically read two-dimensional code symbol (step S41). After that, performing analysis in accordance with the data type, e.g., URL non-display data (UND), text data (TXD), binary data (BND), sound data (MSD), or image data (IMD), of content data in the two-dimensional code symbol (steps S42 to S54). Finally, displaying the result of analysis together with the copyright information on a display unit to provide an operator with the contents of information written in a predetermined position of a two-dimensional code. This makes it possible to appropriately process the information expressed by the two-dimensional code.