Alphabet Inc-owned Google said that the key technology would center around its motion-sensing radar called "Project Soli". Google's Advanced Technology and Projects team (ATAP) has been working on shrinking down radar into a tiny chip for the last five years. They go on to take a subtle jab at Apple's iPhone face unlock feature, which requires users to lift the phone up to unlock.
Some who thought the Pixel 4's bezel will feature two front facing cameras, were dead wrong as the image on Google's blog shows there will be only one camera we presume it will be a single wide angle camera just like on the Pixel 3A. Google says face unlock will work even if you are holding the phone upside down.
Other devices have had face unlock already, but Barbello said the version on the Pixel 4 will be smoother and easier to use.
Motion Sense will allow you to skip songs, snooze alarms, and silence phone calls simply by waving your hand.
At launch, these Motion Sense features will only be available in "select Pixel countries".
At a time when design leaks of the Pixel 4 were beginning to gather pace, Google came in with official images of what the eventual product will look like, taking away all the goodness that comes with leaks.
The Pixel 4 is expected to be launched commercially in the fall. In the second leaks, which pointed to the phone having no notch at the top of the screen, instead of keeping a very large bezel with multiple cameras and sensors.
At this rate, Google seems like it may just be running out of announcements to make before the Pixel 4 is fully revealed, likely in October.
We'll bring you more Pixel 4 news as it breaks, including whether it will or won't have a headphone jack.
Apart from that, Pixel 4 will not have a physical fingerprint scanner nor an in-display one says Google. The device's radar sensors know when you reach for your phone that you'll probably try to unlock it next.
Android Q is expected to natively support 3D face unlock, and the Pixel 4 should pave way for other Android smartphones that plan on adding additional sensors for toughened security.
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