In the world of Psycho-Pass, holograms are an essential part of daily life. They are used in both personal and professional areas, can be summoned up or dismissed easily, and serve a variety of functions.
In the area of personal utilization, 22nd century citizens typically live in what is called a holo house, a virtual structure that overlays a basic substructure. It is the rule, rather than the exception. It is different than a brick-and-mortar home, such as the one in which Joji Saiga lived before becoming a latent criminal. A holo servant is an automated program that performs the duties of a butler or maid. Akane Tsunemori has a holo servant in the shape of an interactive talking jellyfish named Candy.
The futuristic city of Tokyo is littered with holographic projections and displays. In the entertainment districts these images serve primarily as advertisements and signage. The MWPSB also utilizes the technology to create representations of barriers similar to 21st century "Do Not Cross" tape in order to isolate a crime scene.
Communication HoloThe MWPSB employ holos on a routine basis as they investigate cases. Unlike the Psycho-Pass index and Crime Coefficient index, holos are seen when wristcoms are in use, casting an image in space large enough through which the officer can communicate with the NONA Tower or MWPSB HQ to transmit and receive critical data. The Dominator's usage history also appears on these devices. Wristcoms also serve as interpersonal communication devices.
The MWPSB actively uses Komissa to disguise themselves as the character in order to question citizens or to secretly approach a criminal. Komissa can also be deployed unmanned to redirect the citizens when a crime scene blocks a particular way.
In the CommuFields, avatars are used by all of the participants to ensure anonymity. Each person has their own individual character that they use to socialize with other users and to travel to other CommuFields. Such characters include Talisman, Spooky Boogie, Melancholia, and Tsunemori's own Lemonade Candy. While it is required to wear gear in order to enter the CommuField, one can also use holo to project the image of their character over themselves. This is used when a get-together between avatars takes place outside of the virtual world, usually in a club.
Full Appearance Change
Kirito Kamui uses aged holos of the children who were killed in the Mount Kumataka plane crash to disguise himself during the various incidents that transpired in 2114. These aged holos include Riku Mukojima, Maki Shimizu, Kyohei Otsu, and Satsuki Ogina. Kamui himself is a holo, which hides his actual grotesque appearance.
Through the use of holo, one can easily change their clothes by having an overlay of another outfit over their actual clothes. Tsunemori uses this to change her clothes instantly by using her compact, which offers a wide selection of outfits. They can also be purchased if desired.