How To Answer A Call; How To End A Call; Ergonomic Guidelines For Touchscreen Usage - Polaris Soundshield 4G User Manual

8. Ergonomic Guidelines for
touchscreen usage
Screen distance from user
The Soundshield 4G should first be placed at arm's length from the user, and the touchscreen
adjusted back and forth to suit individual preference. Vertical adjustments should not result in a
change in viewing distance.
Screen tilt
The screen should be tilted so the user's line of sight is perpendicular to the screen. This angle
creates the most consistent viewing distance when scanning from the top of the screen to the bottom.
In some instances, when the screen is tilted backward, the location of the Soundshield may need to
be adjusted to avoid screen glare by surrounding light sources.
Screen angle
This guideline places the centre of the screen at an ideal 15° to 20° viewing angle for most desktop
displays. If the display has multiple users, the screen height should be located to ensure easy
adjustability to accommodate each user's height and preference.
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