Keeps your device screen clean and unscratched while preventing unwanted eyes seeing what you're up to. It allows only the person directly in front of the device to view the screen - your screen will look black to the uninvited viewer. It shields in all four directions - vertically, horizontally, from the left and from the right. Now you no longer have to worry when you're replying back to emails or checking your bank account, it's all safe to do no matter where you are! Follow the Easy Application Guide for a bubble, scratch and smudge free screen.