• Orientation estimation is not responsive and suffers from noticeable delays.
• Requires accelerometer and magnetometer.
== Compass Calibration ==
To compensate the offset between real and estimated device orientation, the com-pass offset can be calibrated, by one of these three mechanisms:
• Manually specify the compass offset in the [[Settings]].
• Once the Compass Calibration Button in the [[POI_View|POI View]] is clicked, the Compass will behave as if the current heading was north.
• Once an [[AR-Marker]] used for device pose estimation is scanned, the Compass offset is automatically calibrated.