The Targus 30" Widescreen LCD Monitor Privacy Screen is designed to protect your information and block glare. Tiny vertical blinds on the surface of the screen narrow the viewing angle so data is only visible directly in front of the monitor and up to 45 degrees away from the center of the screen. Onlookers will only see a dark unclear screen when attempting to view the information from a side angle. In addition to providing security, the LCD monitor protector also blocks the glare to help reduce eyestrain. The Targus LCD Monitor Privacy Screen is highly portable and easy to use, and can be attached with clear adhesive strips designed for LCD screens or with the included tab guides that stick to the edge of the LCD screen to hold the screen in place. Users can position the tabs so the screen easily slides on and off.