Even 20 years ago, kids didn’t have their entire lives recorded online. Then, social media assured anyone could go viral and smartphones made us all infinitely more trackable. These technologies have changed what it means to be a kid. Chicagoland author Devorah Heitner explores childhood in the 21st Century in her latest book “Growing Up in Public: Coming of Age in a Digital World.” In this episode, we talk to Heitner about location tracking, “sharenting” and why kids post the way they do.