A photography system includes a plurality of film units and a remotely-accessed look-up table. The film units each have an access code that can be accessed independent of a filmstrip or digital image store. The look-up table has a read-write logical memory unit allocated to each of the film units. The...http://www.google.com/patents/US6240251?utm_source=gb-gplus-sharePatent US6240251 - Film unit, method for enabling secure customization of a film unit, and system
