Security hologram
part · 1980 · Digital age
A hologram on cards and banknotes.
Principles and materials it uses
- Aluminium — is made of. A hologram is a metallized film.
- Wave interference — uses. The image is recorded by interference.
Where it is used
- Payment card — is part of. A hologram.
- Paper money — is part of. Protecting banknotes.
What it is a kind of
- Holography — is a kind of. A hologram.