At  CP+ 2019, Nikon introduced its Z6 and Z7 cameras running firmware with Eye AF. Dpreview tested Nikon full frame mirrorless cameras compare Nikon Z7 side-by-side with the Sony a7R III.

Mirrorless enthusiasts are familiar with Eye AF which is found on Sony mirrorless cameras, including the a7 III and a7R III against which the Z6 and Z7 compete.
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https://www.dailycameranews.com/2019/03/nikon-z7-vs-sony-a7r-iii-eye-af-comparison-by-dpreview/