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A '''3D control peripheral''' is a physical part of a computer system for controlling something virtual in 3D. Examples include SteamVR controllers and [[3D pen]]s. It is a [[control peripheral]] that enables the user to input data in three dimensions easily.
+A '''3D control peripheral''' is a physical part of a computer system for controlling something virtual in 3D. It is a [[control peripheral]] that enables the user to specify a point in 3D for a computer system easily.
+Examples include:
+* magnetic trackers from [[Polhemus]]
+* SteamVR controllers
+* [[3D pen]]s.
The most useful 3D control peripherals use [[linear representational action]] or [[direct action]] ([[3D direct interaction]]). They are naturally 3D.
The most useful 3D control peripherals use [[linear representational action]] or [[direct action]] ([[3D direct interaction]]). They are naturally 3D.