Proper Positioning for NuEye Eyegaze
The positioning of the eyegaze system in relation to the user is extremely important. The goal of positioning is to achieve a stable eye image for NuEye™ to track. Because of this you will probably have to try out different positions.
NuEye System Parameters
The NuEye has an imaginary "eyebox" that measures approximately 10" x 12" x 9". As long as the eyes are within this area they are in the view range of the NuEye system. At this time the user should be positioned somewhere between 18 and 29 inches from the Accent display screen.
TIP: If you move in and out of the view area, the system will "remember" you. This means that once you set up the system you should not have to recalibrate it because of body movement.
Being able to meet these positioning requirements will help you achieve success with the NuEye system:
1. You must have one eye (preferably two) within the eyebox.
2. You should be at least 18 inches from the Accent display screen but can be as far away as 29 inches.
3. Your nose must be aimed at, or slightly above, the midpoint or upper 2/3rds of the display screen.
4. Your face must be straight-on and/or parallel to the display screen. If you are tilted due to positioning or posture, the Accent must be tilted at a similar angle so that your face is directly in front of and at least 18 inches away from the display.
5. There can be no obstructions between your face and the Accent and NuEye system.
Mount your communication device with the eyegaze unit on your wheelchair mount or table stand.
Turn your Device On by pressing the ON/OFF (Power) button
Once your Accent has come on
Open the Toolbox by selecting the TOOLS key 
on the front of your device case.
Select the TOOLBOX key 
from the small menu that appears.
Select the ACCESS METHOD MENU from the Toolbox.
Select Eyegaze.
Select the Eyegaze Positioning option.
The screen shows you what the eyegaze camera is seeing.
Notice the Track Status Box to the right of the image. This gives you positioning feedback.
When Eyegaze is ON, the Track Status Box is green. When Eyegaze is PAUSED, the Track Status Box is red
When positioning is correct, the eyes are level in the image. The angle shows most of the top of the nose to the tip and a normal amount of nostrils. In the Track Status Box you see two level, solid white circles in the center of the box. You do not see any arrows.
When there is Only One Active Eye to Track
If you have only one eye the eyegaze unit can track, you must tell the system.
1. Select OK at the bottom right of your display screen to exit from the Eyegaze Positioning menu.
2. Select Customize Eyegaze Settings.
3. Select Calibration Settings.
4. In the Active Eye option, use the arrows to select the left or right eye as the Active Eye.
5. Select OK to exit this menu.
6. Select OK to exit the next menu.
7. Select Eyegaze Positioning from the Eyegaze Menu and begin to position the user and device.
In this picture the face and eyes aren’t level, they are tilted. The two white circles in the Track Status Box tell you both eyes are being tracked but they are too near the edge so the positioning is not good for accuracy. The arrow tells you to move the user/device to the right. (A yellow arrow means you are approaching the edge of the trackbox. A red arrow means you are at the edge.)
To fix this, tilt/rotate the device or position the user until the eyes are level in the image and the arrow goes away. The tracking circles will be near the center of the Track Status Box.
In this image, the user is too close to the eyegaze unit. The image is out of focus. The angle is not good because you see up the nose rather than at and slightly down on the nose. The grey circle in the Track Status Box tells you that one eye is not being tracked at all. The arrow tells you to position the user farther away from the device.