The iPhone X if officially Apples next top-of-the-line smartphone, and it makes some seriously radical changes to how users will actually interact with their iPhones. With no more home button, the device will instead rely on a new facial scanning biometric feature called Face ID. The technology behind it is complex, and Apple boasts that it's incredibly secure and remarkably accurate. Naturally, if you're replacing a system as widely-used as Touch ID, the system better work flawlessly. Unfortunately, when Apple's Craig Federighi began the very first iPhone X live demo in front of a packed house and countless viewers watching online... it stumbled.
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