The computer screen filter limits the viewing angle to +/- 30°, hiding personal or confidential information from anyone trying to look from the side. Reduces harmful blue light by up to 30%. Installation is easy and can be done using the provided stand-offs without a frame or double-sided tape. The anti-reflective coating reduces glare and improves clarity. The filter is double-sided with matte and glossy screen options, providing protection against scratches and damage.