Issue No. 06 - June (1992 vol. 25)
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/2.153254
<p>Various schemes proposed for storing more information in the bar code label are reviewed. The concept of information density is introduced. The constraints imposed by the reading technology are addressed, and various recently proposed stacked bar codes are surveyed. Certain non-bar-code solutions are discussed.</p>
Y. P. Wang, J. Swartz and T. Pavlidis, "Information Encoding with Two-Dimensional Bar Codes," in Computer, vol. 25, no. , pp. 18-28, 1992.