![]() Face ID uses the TrueDepth camera and machine learning for a secure authentication solution. We have done some important things to safeguard your information, the same way we did with Touch ID. Security is important to all of us to protect information on our devices. This information is matched against the stored mathematical representation to authenticate. Each time you unlock your device, the TrueDepth camera recognizes you by capturing accurate depth data and an infrared image. The TrueDepth camera is intelligently activated for example, by tapping to wake your screen, from an incoming notification that wakes the screen, or by raising to wake your iPhone. To use Face ID while wearing a mask, set up the feature and make sure the camera can see your eyes. Face ID works best when the device is arm’s length or less from your face (25–50 cm away from your face). ![]() The TrueDepth camera has a similar range of view as when you take a photo or make a FaceTime call with the front camera. Face ID requires that the TrueDepth camera sees your face or your eyes, whether your device is lying on a surface or you're holding it in a natural position. To unlock your device using Face ID, simply glance at it. You might do this during the initial set up process, or at a later time by going to Settings > Face ID & Passcode. To start using Face ID, you need to first enroll your face. With iOS 15.4 and iPhone 12 or later, Face ID even works with face masks. Furthermore, it's designed to work indoors, outdoors, and even in total darkness. Face ID is designed to work with hats, scarves, glasses, contact lenses, and many sunglasses. If there is a more significant change in your appearance, like shaving a full beard, Face ID confirms your identity by using your passcode before it updates your face data. A portion of the neural engine of the A11, A12 Bionic, A12X Bionic, A13 Bionic, A14 Bionic, and A15 Bionic chip-protected within the Secure Enclave-transforms the depth map and infrared image into a mathematical representation and compares that representation to the enrolled facial data.įace ID automatically adapts to changes in your appearance, such as wearing cosmetic makeup or growing facial hair. The TrueDepth camera captures accurate face data by projecting and analyzing thousands of invisible dots to create a depth map of your face and also captures an infrared image of your face. The technology that enables Face ID is some of the most advanced hardware and software that we’ve ever created.
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