When purchasing a privacy screen filter, choose one with the most narrow viewing angle

Putting a privacy screen filter on your laptop or mobile device can prevent others from seeing your screen outside of a narrow viewing angle, preventing “visual hacking.” There are several privacy screen filters on the market, but you want to make sure the one you purchase has a narrow enough viewing angle that will be effective while you’re working in public. Try to choose one with a viewing angle of 60 degrees or narrower.