NUI
NUI is the acronym for Natural User Interface.

Natural User Interface
A user interface that allows users to interact with technology through behaviors that feel instinctive or physical, such as touch, gesture, motion, facial recognition, or even eye tracking. NUIs aim to reduce the learning curve by mirroring how people naturally communicate or interact with the physical world. Found in technologies such as touchscreen tablets, VR headsets, and gesture-based gaming (e.g., Microsoft Kinect), NUIs support immersive, context-aware experiences that extend beyond traditional input devices.