The iPhone X uses Face ID, technology that unlocks the phone by using infrared and visible light scans to uniquely identify your face. It works in a variety of conditions and is extremely secure.

This brings up a lot of questions about Face ID, which is why we have this Face ID FAQ.

Face ID white paper and support document from Apple

Apple has released a Face ID white paper (PDF) that provides a bit of detail on how it works. There's also a Face ID support document that explains how the technology protects your information.

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