Optically variable security device
Optically variable surface pattern
Pattern metallized optical varying security devices
Pattern metallized optical varying security devices
Patterned deposition of refractive layers for high security...
Patterned optical structures with enhanced security feature
Patterned reflective optical structures
Preserved and enhanced holographic and optically variable...
Process for the manufacture of non-replicable holograms possessi
Real time fingerprint sensor and verification system
Recording medium and hologram reader
Recording surface relief microstructure
Secure holographic images on paper
Secure optical identification means and method with enhanced var
Secure optical identification method and means
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