An optically variable feature composed of grids that diffract light. This allows various images and effects to be generated, including colour changes (shifts) as well as 2D and 3D images.
A hologram consists of a 2D or 3D image.
Hologram
An optically variable feature composed of grids that diffract light. This allows various images and effects to be generated, including colour changes (shifts) as well as 2D and 3D images.
A hologram consists of a 2D or 3D image.
