They're on roads, restrooms and a range of buildings. Every city is home to a myriad of signs and designs. The key to all is that people can understand them at a single glance. Signs inevitably evolve over time, and signage that foreigners find easy to recognize is high on the agenda as Japan prepares for the 2020 Tokyo Olympics and Paralympics. Join graphic designer Masaaki Hiromura as we explore the world of signage design.