Exclusive SummaryHolographic technology could record and display complete information about three-dimensional objects using the interference and diffraction of light. It was invented in the 1940s and comes in several types. For example, the rainbow hologram is a widely used technology on credit cards and currencies. The traditional hologram needs a laser to rebuild itself, but the rainbow hologram only needs white light, like the sun. After that, people try to make the hologram easier to reconstruct while the recording methods have not been simplified much. In the future, digitalization could help holography go further.IntroductionHolography is a photographic technology that records all the information that light waves affect the interference and diffraction of the object, including the amplitudes and phases. After reconstruction, the image could be observed in different positions and as if the real object was there in the same way, which brings stereopsis to human beings. British Hungarian physicist Dennis Gabor was the first person to invent holography occasionally at the British company Thomson-Houston (BTH) in the late 1940s [1], and thus won the Nobel Prize in Physics in 1971 [2]. The BTH company patented this technology in 1947 [3]. The first holograms containing the 3D object were invented in 1962 [4] thanks to the development of the laser. Theory Recording Process Holography is a photographic technology using the principle of interference and diffraction of light to record object information and then reconstruct the 3D image. The process of recording light wave information on an object, using the principle of interference, is the first step, called holographic recording [5]. Usually laser is used as a coherent light source because it...... middle of paper ...... but also increases interaction with the audience. At a trade show, holographic display also looks very attractive and attracts more customer attention. In the future, it is possible that distance learning and video conferencing will become more interactive and face-to-face. Conclusion To summarize, holography is not a very new technology nowadays, and it has a history of almost half a century. Over the past decade, human beings have witnessed technological innovation, from analog to digitalization. There is no reason to abandon holography and not allow it to join us. Fortunately, computer-generated holography (CGH) is developing rapidly and allows holograms to be created and displayed by computer without any other optical equipment. If there is a way to reduce the cost of holography and no longer require expensive and precise equipment, holography will become everyone's life..