ArrayTag was invented by Dr. Warren D. Little of the University of Victoria and is a proprietary code. The symbol is made up of elemental hexagonal symbols with a patented complementing border which are printed either alone or in sequenced groups. ArrayTags can encode hundreds of characters and can be read at distances up to 50 meters and is optimized for reading at a distance or in variable lighting situations. The principle application of the code is to track logs and lumber.