User's Manual

At 70 cm (27.5 in) the Tobii Dynavox I-Series+ allows for lateral Freedom of Head Movement in an area of about 50 × 36 cm

(20 × 14 in).

In order to function properly for Gaze Interaction the user needs at least one eye in the track box at all times.

5.3.3 Track Status Viewer

Use the Track Status viewer (see 5.3.3.1 Showing Track Status , page 27 for more information on how to open the Track Status

viewer) to help determine the optimal height and horizontal positioning for Gaze Interaction with the Tobii Dynavox I-Series+.

ͻ Ideally, the two dots that represent the users eyes should be in the middle of the Track Status viewer.

ͻ Use the distance meter on the right hand side of the Track Status viewer to determine the optimal distance the user

should be from the Tobii Dynavox I-Series+.

ͻ The white triangle in the distance meter should hover near the center, within the green, when the optimal distance from

the Tobii Dynavox I-Series+ is reached.

For information about calibration of the Tobii Dynavox I-Series+ see 7.2 Calibration, page 62. Also check the lighting

conditions, related to what is mentioned above, when calibrating.

5.3.3.1 Showing Track Status

The track status viewer is a window/dialog where you can verify that the Gaze Interaction recognizes your eyes and that you are

well positioned in front of the device.

Open the track status viewer in one of the following ways:

ͻ Open Tobii Dynavox Gaze Interaction Settings > Calibration and select the Track status button.

ͻ Right-click (long-hold finger on icon for touch screen right clicking) on the Tobii Dynavox Gaze Interaction Settings

icon,

, in the Notification area and select Show track status.

5.3.4 Positioning Guide

For extra assistance in positioning, there is a Positioning guide that will show itself automatically in the bottom-right corner of

your monitor.

The Positioning guide is a visual guide that combines the function of the Track Status viewer with six different image based

instructions to help the user with correct positioning.

Tobii Dynavox I-Series+ Users manual v.1.0 - en-US

5 Using the Tobii Dynavox I-Series+