== Characteristics ==
• * Provides orientation in world coordinates once it is initialized by another orientation estimation system (e.g. [[AR-Marker]] or [[Compass]]) • * The orientation can be propagated accurately, characterized by a growing er-ror of 0.05° per second. • * Very low standard deviation. • * The orientation is updated with roughly 250Hz. • * Very fast and responsive. • * Requires a Gyroscope sensor.