The VALID P4500S (formerly Polaroid P4500S) is a single-sided ID card printer that has re-write and full color printing capabilities. The P4500 S features a unique, state-of-the-art configuration that allows a user to upgrade a single-sided P 4500S to a dual-sided card printer at any time by placing a specially coded dye film into the printer—no need for additional hardware or tools.