Holograms have many uses in art, science and technology. It can be used on the packaging of some products, can be attached to the cover of publications, and can also be used on credit cards, driver's licenses and even clothes to prevent counterfeiting. One-sided medical images (such as CAT scanning images) can eventually be made into three-dimensional holograms. Computer-generated holograms can also make the design patterns of engineers and designers obtain unprecedented visual effects.

Engineers can use holograms to check possible cracks in products and carry out quality control during production. This technique is called holographic nondestructive testing. Holograms are also used in many civil and military aircraft. When pilots look out of the cockpit window, holograms provide them with a lot of important information. This is called intelligent display. Now, smart displays can also be seen in some cars.

Artists can create with holograms. Many artists feel that holograms provide them with a three-dimensional, purely optical space, so that they can express some images and information that cannot be expressed by "traditional" media.

Maybe one day, photons will enter your computer network like electrons today. When this day comes, holograms will be used to store information. This is called holographic digital storage (HDS). With HDS, you can store the information of the entire Library of Congress in a space the size of a cube of sugar.