But there is another matter to be resolved. Since 2013, the Home button had housed the Touch ID sensor, Apple signature security system, allowing to manage the phone’s unlocking routines, and to check the user identity – when you install an app, or use the phone to pay with Apple Pay, for example. The solution introduced with the new iPhone X was Face ID, Apple’s facial recognition, an advanced biometric system based on three sensors, which confirms the identity of the person using the device by comparing it with a previously recorded 3D map of his face. According to Apple, it is more secure than the fingerprint system. Of course, the module for Face ID – TrueDepth camera system, Apple bills it – must be on the front of the phone. It finds its place in a black notch, a promontory that skirts the top of the display and where other components, including the microphone and speaker, are also placed.
