http://www.businessinsider.com/iphone-8-3d-face-scanner-work-millionths-second-report-2017-8

A new report from The Korea Herald suggests that the upcoming iPhone 8's rumoured 3D face scanner will be able to sense a user's face "in the millionths of a second."

An organic light-emitting diode (OLED) panel is believed to cover the eagerly anticipated device's entire front, eliminating the space for the physical home button that doubles up as a Touch ID fingerprint scanner.