Being able to unlock someone else's phone with a picture of their face has been a bug for the same length of time.
The innovation is in implementing it well. I have no idea if Apple has implemented this feature well but if they did then it’s innovative. The innovation is not in being first it’s in doing it well first.
EDIT: It is innovative to do things well for the first time.
No wonder Android people do not understand why people pay good money for very locked down iPhone, to them crappy implementation for hardware and software is good enough.
It appears you haven't touched a decent android phone before. I think you probably should before making these kind of comments.
Why the troll comment? There are good and bad points to both ecosystems. For instance the Fingerprint reader on my Pixel is faster and more accurate than the TouchID on my iPhone 7. That doesn't make me go, iPhone sucks. The implementation on Facial Recognition may not be as great on the android phones that support it, but that doesn't mean you should bash a whole ecosystem and community of people.