Google Pixel 4 comes with 2 new features: Air-gesture-control Motion Sense and Face Unlock

That seems more versatile, and hopefully as secure. (The Google post notes that facial recognition is processed on the Pixel 4 itself and stored locally, as is the Soli sensor data, which is "never saved or shared with other Google services.") Both features are made possible by a new suite of sensors spanning nearly the entire top bezel (which might be why it kept the Pixel 3's massive header).

This includes an IR camera, dot projector, and flood illuminator – all for Face Unlock – along with a Soli radar chip.

Source: techradar.com

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