Secure application of seals

Secure spread spectrum watermarking for multimedia data

Secure spread spectrum watermarking for multimedia data

Secure viewing of display units by image superposition and wavel

Security document including subtle image and system and...

Security threads

Selective encryption of mixed raster content layers

Self-authentication of value documents using encoded indices

Steganographic methods and media for photography

System and method for data security

System and method for encrypting sensitive information

System and method for encrypting sensitive information

System and method for encrypting sensitive information

System for encrypting documents with stencils

System for producing a printable security device image and...

System for protection of goods against counterfeiting

System for the secure storage and transmission of data