The Dicota 4-Way privacy filter is ideal for working in public environments such as libraries. open-plan offices. airports and trains. It protects personal and confidential data by darkening the right. left. top and bottom of the screen from an angle of +/- 30 degrees. The filter is easy to attach and remove thanks to integrated magnets. The enclosed self-adhesive magnetic strips allow it to be used on all frame surfaces. The filter also offers protection against scratches. reduces fingerprints and prevents reflections.