https://techcrunch.com/2019/10/15/google-pixel-4-pixel-4-xl/

The rumors and leaks have been pretty relentless. In fact, over the past three days, the Pixel 4 and Pixel 4 XL have gone up for preorder on at least two different sites. While it’s true that Google’s never been particularly great at keeping this stuff under wraps, this was pretty silly.

Anyway, the Pixel 4 is finally official, and it’s basically exactly what we were expecting from this year’s Google flagship. The device now features face unlock, another addition that brings Pixels in line with the competition, though Google claims it’s the fastest available. Using a new radar chip, the device is able to start the unlock when you reach for the phone and then fully unlock when it sees your face.