Secure optical identification method and means
Secured document, system for manufacturing same and system...
Secured document, system for manufacturing same and system...
Security device
Security device
Security device
Security device based on customized microprism film
Security device using parallax movement to view front and...
Security device with metameric features using diffractive...
Security document with an optical security area
Security element
Security hologram with covert messaging
Security system, particularly for valuable documents
Security system, particularly for valuable documents
Segmented display system for large, continuous autostereoscopic
Segmented display system for large, continuous...
Segmented hologram for multi-image display
Segmented image holographic disks
Self-adhesive film for hologram formation, dry plate for...
Self-aligning holographic optical system and related methods