The Kensington Snap 2 Flat Panel Privacy Filter screen's special hard-coating narrows the viewing angle to shield data from on-lookers without damaging the display. And its textured surface reduces glare and improves contrast for greater visual clarity. The thin privacy screen limits the field of vision to +/- 30 degrees and attaches to a flat-panel display via a spring-loaded mount that’s extremely easy to install without tools or adhesives.