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'''3D user interface''' is computer user interface that is 3D and is spatial in nature and depends upon 3D interface devices, including output devices and input devices.

'''3D user interface''' is computer user interface that is 3D and is spatial in nature and depends upon 3D interface gadgets, including output gadgets and input gadgets.

3D UI can be prototyped using [[Unity]].

3D UI can be prototyped using [[Unity]].

3D UI can be built for different input devices, such as electromagnetic tracking pens and/or [[hand tracking]].

3D UI can be built for different input gadgets, such as electromagnetic tracking pens and/or [[hand tracking]].

3D UI is most effective when it is in the [[personal space]].

3D UI is most effective when it is in the [[personal space]].