Printed security cards [1] are among the most abused of all photographic prints. These cards are used as identification, shown to various officials, passed through multiple readers, and stored in a wallet without protection. Security cards are exposed either accidentally or intentionally to various chemicals. They are handled in cold climates and left in a hot car exposed to sunlight. Security cards must resist alterations, yet must remain readable throughout their expected lifetime. To meet these needs, the security industry has operated at the forefront of technology, adapting conventional and digital imaging technologies to specific industry requirements.