Apple is reportedly working on a laser-based 3D sensor for 2019 iPhone
The proposed system would work by firing lasers out of the device and measuring the time it takes for the reflection to get back to it to establish a depth map. Similar depth information can be obtained by using dual cameras, as Apple already does, and through the infrared-based FaceID system that graces the notch on the front of the iPhone X. click here to goGoogle even does it by using dual pixels in its latest Pixel 2 camera, which produce just enough of a parallax effect to get the job done. But Apple's new system is presumably being developed to produce results that are a lot more precise and robust.
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