An improved two-dimensional code encoding approach for publications*

Nowadays, the publishing industry has begun to use the two-dimensional code in cell phones, but the standard is not defined. Compared with single-dimensional bar code, two-dimensional code contains more information and functions. Nowadays, two-dimensional code has been broadly used in some industries, such as mobile communication, logistics and advertising, but not in publishing. This paper introduces an improved two-dimensional code for publications and the encoding and decoding approach as well.