Learn Maxicode QR code

　　Maxicode is a matrix two-dimensional barcode with medium capacity and fixed size. It is composed of closely connected hexagonal modules and positioning graphics located in the center of symbols. Maxicode is specifically designed for high-speed scanning, primarily for package search and tracking. The TWO-DIMENSIONAL code of Maxicode is almost square in shape and consists of a concentric circle (or bull's eye) Finder Pattern in the center of the symbol and hexagonal honeycomb data bits around it. This arrangement enables Maxicode to scan quickly in any direction.

　　Maxicode allows encoding of 256 international characters, including ASCII characters 0 to 127 and extended ASCII characters 128 to 255. In numeric combination mode, nine digits can be represented by six character codes. Characters for code switching and other controls are also included in its character set. Each character consists of six hexagonal modules. Each module represents a binary bit, with dark modules representing "1" and light modules representing "0". Usually six modules are arranged in three layers, from top right to bottom left, as shown below.

　　Maxicode provides two Error Correction levels, Standard Error Correction (SEC) and Extended Error Correction (EEC), which require different numbers of words. Provides varying levels of error recovery, up to 16% for SEC and 25% for EEC. The basic characteristics of the two error correction levels are shown in the table. The level of error correction to use is specified by the pattern character.

　　In order to facilitate positioning, make decoding easier, and speed up scanning, Maxicode has a fixed figure size and data capacity of about 1 square inch, with a maximum data capacity of 93 characters. Maxicode has a fixed size and unique central positioning figure of three black concentric circles for scanning positioning. The Orientation graph is located in the center of the virtual hexagon surrounded by data modules. There are three different combinations of black and white on each of the six vertices of the virtual hexagon, called "Orientation Cluster", which provides important Orientation information for the scanner.