[2] Animoji can be accessed from the iMessage app on supported devices and can embedded on top of users in FaceTime calls or on video recorded in Clips.
With iOS 12, Apple expanded upon Animoji by implementing customisable Memoji, which can be designed by the user using different facial features and clothing options to create avatars of themselves or others.
[5] A standalone Memoji app was implemented on Apple Watch devices with watchOS 7, allowing users to create and adjust their avatars from their wrists.
Apple had created 3D models of all standard emoji prior to its late-2016 OS updates from which the static default 2D graphics had been rendered.
Animoji were first unveiled alongside the announcement of the iPhone X, as the feature makes use of the device's TrueDepth camera to achieve facial tracking.