Embedding data in position identification pattern

摘要

A method of embeddling data within a position identifying pattern on a product (116) comprises defining a plurality of information areas (112) within a pattern space; asscciating a unit of information (114) with each of the information areas; defining a plurality of information carrying areas (117) on the product; and applying pattern (100) from one of the information areas (112) to each of the information carrying areas (117) to define an information sequence made up of a sequence of said units.