I’m pretty sure it’s only in the movies that people so blindly turn a corner that they smack into another person walking around the corner from the opposite direction. That’s why the Corner’s (sic) Communication device concept by Sanghoon Lee is so completely unnecessary. It’s a little corner mounted gizmo that makes a sound and lights up when someone is approaching from around the corner. But if you’re so wrapped up in your own world that you don’t even see someone walking around a corner, what are the odds you’re going to be paying attention to a wall mounted light. Slim to none and slim just left town.