This National Standard of Canada is equivalent to International Standard ISO/IEC 15424:2000 (first edition, 2000-06-01). 1 Scope This International Standard applies to automatic identification device communication conventions and standardizes the reporting of data carriers from bar code readers and other automatic identification equipment. It specifies a preamble message generated by the reader and interpretable by the receiving system, which indicates the bar code symbology or other origin of transmitted data, together with details of certain specified optional processing features associated with the data message.