3M Privacy Filters help block the screen view from anyone viewing the computer from a side view. 3M's unique microlouver privacy technology allows only those directly in front of the computer to see on-screen data clearly. With personal information disclosure laws becoming more restrictive, plus identity theft and corporate information loss costing companies billions of dollars a year, protecting your confidential information is more critical than ever. 3M Privacy Filters use screen darkening privacy technology, rather than common blurring or distorting of screen data to prevent casual onlookers from viewing your screen. It's easier on your eyes, protects your on screen data in high traffic areas and protects the fragile surface of LCD screens from scuffs and scratches.