A group led by a Rutgers University professor just created an Android smartphone app that notifies users when their location data is being tracked and transmitted by another app. Assistant professor Janne Lindqvist’s new app displays a banner across Android screens saying, “Your location is accessed by [app name],” when said app is transmitting location data, taking advantage of technology already present on the Android operating system that few users were aware even existed. “People were really surprised that some apps were accessing their location, or how often some apps were accessing their location,” Lindqvist told MIT Technology Review of...