Japanese bathroom companies gradually adopted this technology and began manufacturing smart toilet seats. Influenced by Japan’s “toilet god” culture and cleanliness consciousness, they enhanced the product by adding features such as seat heating, warm water cleansing, warm air drying, and sterilization. In 1980, TOTO launched the Washlet, a smart toilet seat that led to the widespread adoption of smart toilets in Japan. By 2021, over 80% of Japanese households had a warm water cleansing toilet seat.