“… Whereas Samsung’s Galaxy S8 forced users to choose between face recognition (which works best in well-lit environments) and iris scanning (which excels in darker areas), the Galaxy S9 combines both methods, trying one, then the other, then both. This is supposedly faster than the old system, but as CNet points out, it may still suffer from the same security weaknesses. As long as the system relies on 2D image recognition, it’s still susceptible to unlocking by photo, which might explain why Samsung won’t allow face recognition to authorize mobile payments.”… Fast Company

Yes, the iPhone is supposedly better. And it’s a good bet technology will continue to improve. Maybe 2020 will bring vision ability to phones and tablets such that they can really tell if it’s you trying to get access. An educated guess may suggest 2030 as when there will be reliable recognition by a handheld device under a spectrum of lighting conditions. That said, a quick glance to authenticate sounds insanely appealing. Like voice though, the promise was publicity for more decades than the divas at Dragon will admit. Example: take today and try relying on Siri or Alexa or Google or any of the other VR/AI mashups to be certain it’s only you inquiring or ordering. That step still has a way to go.

And before the real confusion begins: face recognition is not recognizing a face anymore than voice recognition is equal to recognizing a voice. You may have them at “Hello”… even the best AI can’t announce “Sally is on the phone” – “at the door” and not be confused by a total stranger.  However, a child can – because the human brain remains massively more powerful as a recognition instrument than even an Apple X10.

In fairness, the species’ skill at accurately scanning the situation and making the right decision has evolved over tens of thousands of years, Those who could not tell the difference between an angry orangutan and uncle Oscar abruptly ceased to contribute to the gene pool.