According to foreign website AppleInsider, a patent application named "Three Dimensional User Interface Effects on a Display by Using Properties of Motion" (3D user interface display effects achieved through the properties of motion) was recently exposed by the media and caused quite a stir. This is because the document describes the following information: iOS devices can display naked-eye 3D effects through the angle of light. The document states that this effect can be achieved by a series of special sensors in future iOS devices. For example, eye-tracking performed by a front-facing camera can automatically display different 3D user interfaces according to changes in the surrounding environment, while the compass, accelerometer, gyroscope, and GPS in the device will all serve this purpose. In addition, the document also reveals that facial recognition technology will also be considered for iOS devices. Although this is just one of Apple's patent applications and does not necessarily mean that future iOS devices will definitely have this drool-worthy feature, it at least allows us to look forward to an even more outstanding iPhone in the future, doesn't it?