I've never seen this unit nor anything even remotely this complex in a public toilet. The vast majority of toilets I've seen are the basic washlet features and a few give you the added option of spray pressure. The pressure options I've only ever seen in hotels. Not only that, but the vast majority of public toilets are auto-flush.
Having said that, the "bidet" label on the "ladies" button is highly misleading ;-)
This use case (use by people who are not literate) is one of those few circumstances where worse-is-better, because public toilets (like one might find in a train station or department store) are typically either mechanically operated (trivial to use) or the lowest-scale models.
That said, this is not a rare, exotic toilet in Japan; it's something which would be unremarkable in an office building or a restaurant that you could reasonably use for date night.
Don't you like the washiki toilets? ;) (seriously, I live neither in a big nor a small city, but there are way too many of them still, in this century)
I don't :-) But that's the reality of the izakayas around here. Actually the virtually brand new (7 years old???) onsen near me has exclusively washiki toilets (very nice new ones). Apparently the older patrons like them. They have handlebars on the wall too, which is a nice usability touch.
Yeah, I figured that's the theory, but in practice I've found no consistent aiming for either function. Also, most washlets with both also have an independent forward/backward function.
Besides all that, is there some targeting system going on down there? Machine vision? Lidar?
None that I know of. A combination of adjusting yourself and using the forward back buttons usually works. There are also some with pulsating streams for extra scrubbing power.
It's going to happen sooner or later. I'm pretty sure the $8000 models employ some kind of computer vision to adjust the sprayer to the correct "human output interface".
A cloud toilet that examines your feces and urine probably isn't far off (and is probably already in the works).
Having said that, the "bidet" label on the "ladies" button is highly misleading ;-)