https://www.theverge.com/2017/9/12/16270352/apple-iphone-x-home-button-removed-unlock-touch-id

There’s a new way to unlock an iPhone. Onstage today, Apple’s Phil Schiller unveiled the iPhone X, with one big surprise: no home button. Because of its edge-to-edge display, the iPhone has no place for a conventional home button, relying instead on a complex facial recognition system called Face ID to unlock the phone.

Face ID will replace TouchID, the home button sensor that’s enabled fingerprint logins since 2013’s iPhone 5S. Users can wake the phone by swiping up from the button instead of hitting the button. The same gesture will open the control panel once the phone is awake.