An experimental technology from Google lets people know if they are standing too close to another individual. It’s called Sodar and uses augmented reality to overlay a digital guide that measures and show the space between another person. Sodar works through Google-made Chrome browsers on Android devices supporting augmented reality. It became available this week. Google says it creates an “augmented reality” two-meter radius ring around the person carrying the phone and lets the person know if another person accompanies that space. The company made it available to license for free.