Privacy protection filter designed to safeguard confidential and personal information displayed on the screen. It prevents side viewing from left and right by limiting the viewing angle to 60°. Suitable for 20" screens and is applied directly to the screen according to installation instructions. The filter stays in place but can be removed and repositioned without leaving residues. Suitable for use in public places (trains, airports, offices, cafes, schools). Reduces blue light exposure by 50% and preserves screen details. Provides screen protection from scratches, fingerprints, and minor impact damage.