Although he had some commercial clients, most of his work was for social and cultural concerns. He was a popular figure among American designers. His book “Visual Illusion” (Rikuyosha Publishing, 1982) was a virtual textbook for designers in the United States.
"Mr. Fukuda was indeed a prankster throughout his life. To reach the front door of his house, on the outskirts of Tokyo, a visitor had to walk down a path to a door that appeared to be far away. In fact, appearances were deceiving because the front door was only four feet high. Inside, Mr. Fukuda would emerge from a concealed white door exactly the same color as the wall to offer the visitor a pair of red house slippers."