It doesn't. Our app, Greypad, is a PDF reader that uses the front-facing camera to detect when other people are looking at your device and then blurs the conte

It doesn't. Our app, Greypad, is a PDF reader that uses the front-facing camera to detect when other people are looking at your device and then blurs the contents of your screen upon detection. All apps, however, must first explicitly request permission from the user in order to access the camera(s). Greypad: https://itunes.apple.com/us/app/greypad/id1450783054 https://itunes.apple.com/us/app/greypad/id1450783054