I don't understand why they didn't do it like the Lumia 950xl... iris scanner. Infrared to light up the eyes, another to take the pic.
they also have it! fingerprint, face, iris, pin, sequence... they only miss the list of things in your fridge 😛
Then how can a regular picture fool it? Seems like a software issue and not hardware.
I mean: you can either auth yourself via face or any other solution. Samsung AFAIK doesn't implement so named pure biometric 2 factor-auth. You have just to avoid face and fingerprint (as it is too close to camera). just use iris or sequence/pin...
I own a xiaomi redmi 4 and to be honest rear-fingerprint scanners are a bit of a pain... I alternate fingerprint to sequences...
That's definitely different than other trusted sources lead me to understand.
Check your sources. Are they quoting the laundry list of 2013 (this article was 2014) references to the opposite being true? Looks like there was reason to believe it in 2013, but nothing substantial, so everyone repeated it. But it got put to the test in 2014 and proved to not be what people had been saying.