You may want to unlock the iPhone 8 with your face, not finger
https://www.cnet.com/news/iphone-8-facial-recognition-millionths-of-a-second-report/
Using your face may be the best way to unlock the upcoming iPhone 8. The iPhone is reported to come with 3D sensors for facial recognition that can allegedly sense your face in millionths of a second, according to The Korea Herald.
In order to celebrate the original iPhone's 10th anniversary, Apple is rumored to be releasing a dramatically redesigned iPhone 8 (its exact name is TBA). If rumors are to be believed some of the features we can expect on the new iPhone include an edge-to-edge OLED display, wireless charging, and AR capabilities.
I'm assuming these sensors can tell the difference between my face and a photo of my face being held up in front of the camera...?