Apple iOS 11 leak reveals iPhone's new Face ID set-up process

The epic leak of the Golden Master version of iOS 11 on Saturday continues to deliver surprises, and the latest offers more insight into how Apple's new Face ID system may work. 
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A Brazil-based iOS developer posted several screenshots and videos on Twitter not long after the initial leak, and the posts appear to show the process for setting up the iPhone's new Face ID authentication. 
We get to see wha