Method for embedding security codes into film during printing

A method for embedding security codes on a motion picture film during film printing by exposure to light, the method comprising the steps of:

• obtaining security code information from an external source, said security code information including film location information comprising a zone within a scene on the motion picture film for placement of the security code;
• providing the obtained security code information to a light valve controller connected to a film printing apparatus;
• determining film position information during printing;
• and
• controlling the light valve controller to vary the light exposure at the film location.

Apparatus for embedding security codes on a motion picture film during film printing by exposure to light, comprising:

• means for obtaining security code information, including film location information comprising a scene having at least one zone within which the security code is to be embedded;
• means for providing the obtained security code information to a light valve controller connected to a film printing apparatus;
• means for determining film position information during printing;
• and
• controlling the light valve controller to vary the light exposure at the film location in accordance with the security code information.