Copy-resistant document

Copyproof document

Counterfeit resistant documents and methods

Counterfeit-proof paper for discouraging attempt at reproduction

Credit and identification cards having pieces of diffraction gra

Currency paper, especially bank note, with a safety design and p

Data carrier with a module and a hologram

Data carrier with an optically variable element

Data carrier with an optically variable element

Data carrier with an optically variable element

Data-written medium

Diffractive anti-counterfeiting tag with naked-eye...

Document having a security feature and method of determining the

Document of value

Document protection methods and products

Document with a moire-generating raster structure

Document with an optical diffraction safety element

Document with an unforgeable surface

Document with invisible encoded information and method of...

Documents having a revealable concealed identifier and the metho