http://www.techradar.com/news/apple-promises-youll-love-face-id-once-you-try-it

There are two big changes coming with the iPhone X - that sharp, bezel-free, OLED display, and the fact you need to unlock it with your face rather than your fingerprint. Questions have been raised about just how well that Face ID system is going to work, but Apple is promising people will soon grow to love it.

Speaking to TechCrunch and John Gruber's Talk Show, Apple SVP of Software Engineering Craig Federighi answered a few questions on how Face ID works and why it's an upgrade over Touch ID. He confirmed that you can squeeze your phone to disable Face ID if needed, and said once people get to try the tech, their doubts will fade away.