A code carrier, on which multiple barcodes corresponding to independent entities are printed or stored, is disclosed. The barcodes are arranged on the code carrier and angled such that a barcode reader may individually read a desired barcode and the barcodes are surrounded in distinctive colors. A code...http://www.google.co.uk/patents/US7950580?utm_source=gb-gplus-sharePatent US7950580 - Membership cards
