Utilizes 3M™ microlouver privacy technology so you can use your device in public without revealing confidential information. You clearly see your information while people at your side only see a darkened screen. You can keep your information private in the portrait mode, when needed, change device orientation to landscape mode to share. With a light matte front surface, it enhances your viewing experience by reducing glare. Dry application process and easy to remove with no residue. For Use With: iPhone® 4/4S Portrait; Accessory Type: Privacy Filter.