The I-Series and I-Series+ devices can be used in both upright as well as resting orientation. To facilitate this, I-Series Control Center allows you to specify whether the display should automatically rotate according to the device orientation, or whether it should always be in a specific orientation. To change the display orientation setting, launch I-Series Control Center from your desktop. Select theDisplay tab and set the preferred setting for display orientation. Please note that the positioning of the eyetracker and Gaze Interaction is optimized for upright use. Some users might experience that it still works for them even in resting orientation but the majority wont be able to use it. The same calibration cannot be used for both orientations but you have to recalibrate if you change display orientation.