A machine readable binary code which is dynamically variable in size, format and density of information is provided. The binary code is formed as a matrix having a perimeter and data contained therein. The perimeter is provided with density indicia for indicating the density of data contained within...http://www.google.fr/patents/US5473151?utm_source=gb-gplus-shareBrevet US5473151 - Dynamically variable machine readable binary code and method for reading and producing thereof
Dynamically variable machine readable binary code and method for reading and ...
