are bar codes? Bar codes are a data input method requiring a scanner and decoder attached to a dedicated software application or relational database which collects, stores... manner as a computer keyboard. The computer to which the scanner and decoder are attached must house and run a software application or a relational database for managing and recording... detailed data. No price, personal or descriptive data is encoded in a bar code. Instead that control number (bar code number) relates to information stored within the computer. Is...