Tired of having to tap your Pixel screen to keep the display from turning off? Enable this handy feature and it’ll remain on as long as you’re staring at the screen. Back with Android Google added a pretty nifty feature called Screen Attention, which is a display management feature that uses the device’s front-facing camera to keep the display on, so long as the user is looking at the screen.
Link: How to enable the Android Screen Attention feature on a Google Pixel phone
via http://www.techrepublic.com