Identicons are formed as visually distinct geometric images derived from a digest hash of the poster's IP address.
In 1997, Cybertown first introduced three dimensional avatars to internet chat.
Because of its ethically-nuanced, story-driven approach, he took the Hindu word associated with a deity's manifestation on earth in physical form, and applied it to a player manifesting in the game world.
In Norman Spinrad's novel Songs from the Stars (1980), the term avatar is used in a description of a computer generated virtual experience.
Some avatars are animated, consisting of a sequence of multiple images played repeatedly.
In such animated avatars, the number of images as well as the time in which they are replayed vary considerably.