In the 1960s, Japan began developing early electronic bidet toilets, which featured advanced hygiene capabilities and marked a significant shift in bathroom technology. These innovations laid the groundwork for the modern smart toilet, which integrates features such as heated seats, water temperature control, and self-cleaning mechanisms. The introduction of these toilets reflects Japan's commitment to technological advancement and public health. Today, smart toilets are recognized for their convenience and sustainability, influencing global bathroom design.

The precursors to Japanese smart toilets in the 1960s represented a postwar technological renaissance, inspiring poets like Shuntaro Tanikawa to reflect on themes of cleanliness, privacy, and the evolution of domestic life. This innovation became a metaphor for the intersection of tradition and modernity in contemporary poetry.