Using a smartphone while walking has become a common habit. The appearance of "zombies", i.e. pedestrians engrossed in their smartphones, is becoming an increasingly pressing problem in urban traffic. Because of people's carelessness, many traffic accidents happen. Some time ago, the Germans answered this with floor traffic lights (LED lights built into the pavement that glow red and green), and in the Netherlands they invented a similar type of traffic signal that responds to the challenges of the time. Those in charge probably can't prevent us from using a smartphone, but they can prevent accidents...
