Information encoding with two-dimensional bar codes

Abstract

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.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>