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It's conspicuous that the real face of the user of the iPhone isn't shown in the video or in photos on the site.

In the video, he shows the iPhone being unlocked with his own face at 1:06:

So it does. It seems that the iPhone is better at recognising faces than me at least.

On the bright side, this seems to confirm that one would be able to use FaceID if mugged and beaten black and blue.