Prevent eavesdropping by limiting screen viewing angles.This laptop privacy filter is designed for laptops with 13.5" screens and 3:2 aspect ratio.Prevent eavesdroppingThis privacy filter is a practical and cost-effective solution to protect confidential data from prying eyes. The privacy filter darkens the computer screen from the side while giving the user a clear viewing angle of 60 degrees (+/- 30 degrees from the center).Flip and PressThe feature allows you to quickly flip the privacy filter to share content without having to remove the filter. The ultra-thin and sturdy privacy filter preserves the touch feel of your computer, so it's easy to use. The privacy shield has a light transmission of 60%, providing optimal screen brightness and increased privacy protection.Hassle-free installationMount the privacy shield with the included adhesive strips or flip tabs. This device is designed for use on bezel-less or narrow bezel displays.Reduced blue lightReduce eye strain and improve visual comfort by reducing exposure to blue light. The 13.5" laptop privacy filter blocks up to 51% of the blue light emitted from the screen. Digital eye strain can lead to symptoms such as headaches, dry eyes and blurred vision.The StarTech.com Advantage