3M™ Privacy Screen Protector for Amazon® Kindle™ Fire HD 7 (Portrait) utilizes 3M™ microlouver privacy technology so you can use your smartphone in public without revealing confidential information. You clearly see your information on your phone while people at your side only see a darkened screen. With a light matte front surface, 3M™ Privacy Screen Protectors enhances your viewing experience by reducing glare and is easy to remove.