http://www.techradar.com/news/the-iphone-8-could-come-with-a-rear-facing-3d-laser-to-support-ar-app

Fast Company has reported that the iPhone (either the upcoming models or the 2018 ones) will use a vertical-cavity surface-emitting laser (or VCSEL) system, as evidence mounts that Apple has procured VCSEL components from various sources.

The VCSEL system would improve the iPhone camera’s autofocus capabilities and depth perception for better augmented reality experience...

...Whether the iPhone 8 will actually arrive with the VCSEL technology, however, will depend on how quickly Apple’s engineers can work and, of course, the accuracy of these leaks. And given that the system will apparently be integrated into the rear of the phone, we might have to wait until September to find out if we'll need to stare at the rear of the handset to unlock it, or if the 3D sensors will grace both faces of the phone.

Mmhhh?