Abstract
The invention relates to a graphic visual code (200) composed of a plurality of graphic patterns, known as primary patterns, of which the spatial arrangement with respect to one another represents predetermined information, known as primary information, which can be read by an optical reader means performing a predetermined reading application, known as the primary reading application. The invention is characterized in that at least one of the primary patterns (202), known as the enriched pattern, comprises at least one graphic pattern, known as the secondary pattern, representing an item of information, known as the secondary information, and readable by an optical reader means performing a reading application, known as the secondary reading application. The invention also relates to methods and devices for generating and reading a graphic visual code of this type.