I spent a lot of time in the Shinjuku station and always wondered about this!

If, over the past several years, you have had the privilege of joining the 3.3 million people that pass through Tokyo’s Shinjuku station each day, you may have observed the work of Mr. Sato. A construction worker by trade, Sato uses strips of adhesive tape to create elaborate makeshift signs that help people navigate the temporary chaos of ongoing renovation work at Shinjuku station.

Shinjuku station signage made with adhesive tape – Link.