Authenticating Identification and Security Documents

摘要: The application discloses identification and security documents methods system for authenticating such documents. In one implementation, a document includes first surface; second surface. surface comprise set of print structures structures. the cooperate to obscure Iocationon firast (9a) is arranged on so as provide reflection pattern. example, pattern (l id) diffraction grating. preferably provided with metallic ink. other implementations financial instrument or an organic light emitting diod (OLED) array. OLED array displays (display) information thereon. correlated in document.