Prevent visual eavesdropping by limiting the viewing angles of your 13.5" Surface Book or Surface Laptop screen.This laptop privacy screen is compatible with the 13.5-inch Surface Book and Surface Laptop. The touchscreen capability, bubble-free installation, and an included storage sleeve complement this essential accessory for your compatible Surface devices.Prevent Visual EavesdroppingThis privacy filter is a convenient and cost-effective solution to protect confidential data from unwanted viewers. The privacy shield darkens your Surface Book or Surface Laptop from the sides while providing a clear viewing angle of 60 degrees (+/- 30 degrees from center) to the user.Anti-Glare FilterThe privacy screen protector features an anti-glare matte finish on both sides for bright environments. The filter provides additional screen protection with a fingerprint and scratch-resistant coating. The privacy shield has a light transmittance of 57.5% providing optimal screen brightness and enhanced levels of privacy.Hassle-free InstallationThe privacy filter is an exact fit design that will not interfere with top-mounted webcams, sensors, or when closing the lid. Affix the privacy screen shield using transparent mounting tabs.Blue Light ReductionReduce eye strain and improve visual comfort with this blue light reducing privacy shield. It blocks up to 51% of the blue light emitted from the display in the 380nm - 480nm wavelength range. Digital eye strain can lead to symptoms like headaches, dry eyes, and blurred vision.The StarTech.com Advantage