LASER IMPLANTED SECURITY DEVICE

摘要

A method for embedding a security device into a security document, the security document including a target polymer film (1), the method including laser irradiating a polymer carrier film (2) doped with dopant molecules (3) according to a predefined security pattern with an intensity sufficient to eject the dopant molecules (13) into the target polymer film (1) but below that which causes ablation of a polymer carrier film (12).