Many of us already record the places we go and things we do by using our smartphone to diligently snap photos and videos, and to update social media accounts. A company called ARO is building technology that automatically collects a more comprehensive, automatic record of your life.

ARO is behind an app called Saga that automatically records every place that a person goes. Now ARO’s engineers are testing ways to use the barometer, cameras, and microphones in a device, along with a phone’s location sensors, to figure out where someone is and what they are up to. That approach should debut in the Saga app in late summer or early fall.