A reproduction apparatus (e.g., photo kiosk) includes a lens for imaging a customer-provided original onto an opto-electronic detector for producing image data, and a reproduction system for producing a copy therefrom. Images that are to be resistant against copying on such apparatuses can be printed...http://www.google.com.au/patents/US6751320?utm_source=gb-gplus-sharePatent US6751320 - Method and system for preventing reproduction of professional photographs
