Remember Face Unlock from Ice Cream Sandwich? There's a screenshot of it above, along with my dog Thor. It was okay as an unlocking method, but not ideal. These days, Google includes Trusted Face on phones, which is part of the Google Play Services package. Additionally, some OEMs, like Samsung and OnePlus, include their own facial unlocking software on devices. According to XDA Android
As XDA details, this new facial unlocking feature Do not just authorize the purchase of goods.
So, it's anticipated that it will take advantage of this new feature, the phone is running it hardware, not just front-facing camera (s). ID: a face.
For a full breakdown of the code, follow the XDA link below.
Will we probably hear much more about this at Google I / O in May? You best believe it.