- Visual effects (VFX): VFX artists use computer-generated imagery (CGI) to remove the actor from the scene or to make them appear transparent. This is often done by chroma keying, where a green or blue screen is used to isolate the actor from the background, and then the background is replaced with a different image or animation.
- Practical effects: Practical effects, such as mirrors, smoke, and lighting tricks, can also be used to create the illusion of invisibility. For example, a person can be made to appear invisible by standing behind a one-way mirror, or by using a smoke machine to obscure their presence.
- Camera tricks: Camera tricks, such as rapid editing and camera angles, can also be used to create the illusion of invisibility. For example, a person can be made to disappear by quickly cutting away to another scene, or by using a camera angle that obscures their presence.
It's important to note that these techniques are only used in movies and television shows, and they do not actually make people invisible in real life.