What if your computer decided not to blare out a notification jingle because it noticed you weren’t sitting at your desk? What if your TV saw you leave the couch to answer the front door and paused Netflix automatically, then resumed playback when you sat back down? What if our computers took more social cues from our movements and learned to be more considerate companions?
It sounds futuristic and perhaps more than a little invasive—a computer watching your every move? But it feels less creepy once you learn that these technologies don’t have to rely on a camera to see where you are and what you’re doing. Instead, they use radar. Google’s Advanced Technology and Products division—better known as ATAP, the department behind oddball projects such as a touch-sensitive denim jacket—has spent the past year exploring how computers can use radar to understand our needs or intentions and then react to us appropriately.
This is not the first time we’ve seen Google use radar to provide its gadgets with spatial awareness. In 2015, Google unveiled Soli, a sensor that can use radar’s electromagnetic waves to pick up precise gestures and movements. It was first seen in the Google Pixel 4‘s ability to detect simple hand gestures so the user could snooze alarms or pause music without having to physically touch the smartphone. More recently, radar sensors were embedded inside the second-generation Nest Hub smart display to detect the movement and breathing patterns of the person sleeping next to it. The device was then able to track the person’s sleep without requiring them to strap on a smartwatch.