What are holograms used for on identification documents?

Holograms serve as vital security features on identification documents primarily due to their unique properties. They are designed to create images that can appear and disappear when viewed from different angles, making it challenging to replicate or forge the document. This dynamic effect adds a layer of authenticity and safety that protects against counterfeiting, differentiating legitimate documents from fraudulent ones.

While holograms might have a visually appealing aspect, which could lend a decorative quality to identification documents, their primary purpose goes beyond aesthetics. The weight of the document or waterproofing features are not relevant to the function of holograms, reinforcing that their inclusion is primarily for security purposes.