A method of placing a two-dimensional barcode symbol on a photographic element, the barcode symbol comprising collections of modules arranged in a regular array with a plurality of defined orientation directions, the photographic element exhibiting linear defects in a predominant direction and having...http://www.google.com/patents/US6456798?utm_source=gb-gplus-sharePatent US6456798 - Barcode and data storage arrangement on a photographic element
