Abstract: A method of operating a hardware system, including a computer, for use in registering attendees at large gatherings, such as trade shows or conventions, and producing embossed identification and inquiry cards for each attendee. A plurality of data input terminals are used to supply information concerning each attendee to the programmed computer. Entered data is edited under software control before being stored by the computer. Appropriate portions of the entered data are transmitted to one of a plurality of card embossers where an identification and inquiry card is prepared. The entered data is retrieved from storage as desired to provide statistical information concerning attendance at the trade show or convention.