Keep your private data and content safe from prying eyes with the Targus ASF19WUSZ 19" Widescreen Privacy Filter. It features tiny vertical blinds on the surface of the screen that narrows the viewing angle, so that data is only visible when you are directly in front of the monitor. When others attempt to see the information that is on the monitor from a side angle, they will only see a dark screen. The monitor screen filter will also help to reduce strain on your eyes by blocking the glare that is reflected off the screen. It can be easily attached to the screen using clear adhesive strips designed for LCD screens. This monitor privacy filter is provided with tab guides that stick to the edge of the monitor to hold the screen in place. This item can be used with both notebook and LCD screens.