https://www.theverge.com/2017/9/9/16280026/apple-iphone-face-id-animoji-features-leak

Apple’s big September event doesn’t start until Tuesday, but leaks are giving us a good idea of what’s going to be announced. While we’ve already seen a lot about the iPhone 8 thanks to various HomePod firmware leaks, a newly leaked final build of iOS 11 contains even more about the unannounced iPhone. 9to5Mac reports that the iPhone 8 (or whatever Apple calls it) will include a “Face ID” unlock that will likely replace Touch ID.

Face ID is referenced in Apple’s firmware, and it appears to be the official name for the new way to unlock the iPhone 8 with just your face. A leaked setup animation shows that iPhone 8 owners will have to move their face around for the front-facing cameras to scan it and use it for unlocking the phone automatically.