Designed to fit the Microsoft Surface(tm) Pro 9 and Surface Pro 8, the 4Vu(tm) Privacy Screen protects your information using tiny vertical blinds on the surface of the privacy screen, which narrow the viewing angle so data is only visible directly in front of the monitor up to 30° 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 when held in landscape orientation. In addition to providing security, the screen also helps block the glare from lights and windows. The 4Vu Privacy Screen can be easily attached by using the included attachments.