The toilets here never fail to confuse me. They are so complicated and high tech that they belong in a futuristic sci-fi movie.
When you sit down, it powers on automatically. Off to the right side, there is a control panel that looks almost like an arm rest. This panel contains brightly colored buttons that controls the bidets, the water pressure, seat temperature, water temperature, ect. Japanese toilets can do almost everything imaginable. I found a toilet in a department store that made running water sounds when it detected use.
In public bathrooms, there is a long intricate poster/manual describing each toilet function and its button location on the control panel. Thankfully, there is a small portion of the manual written in English for Gaijins like me. Without that English portion, I would be even more confused that I already am.
I still have not figured out how to use the Eastern style squat potty. I have stood there staring at one for quite some time, but I still don`t know which end is the front and which is the back.