Toilet paper? Isn't this what saving dryer sheets are for?
I have been reading these comments with some amusement. I thought I would comment too since I have lived a good part of my life in Japan and have used Japanese toilets even longer.
The toilet in question is not a bidet but is generally called a washlet. In fact, they are not toilets but toilets seats with bidet and other functionality. They were first developed by the Toto Company and were called Washlets. These are now made by many Japanese, Korean and Chinese manufacturers but many folks still refer to these units as washlets. Most washlets have wands under the seat that extend when you press a button and you can wash the front or rear with warm water. Most have warm air dryers and the seats are generally warmed. A real benefit in Japanese homes which seldom have central heating.
Most homes in Japan have washlets now as do most hotels. You will find them in restaurant restrooms and even public toilets. Some of my gaijin friends now refer to Japan as the "Land of the Shiney Bottoms". Many of the units are quite sophisticated and I am waiting for those units that may at some point actually examine the waste and suggest dietary alternatives. For those with hemorrhoids, fissures, and other issues, these are wonderful with warm soothing water. Many of our Japanese friends in the U.S. or those friends who have lived in Japan have these units as well. Here is a link to one such unit:
Washlet C110
I might add that these units have been around for a long time and are very reliable. Of course, it depends on the manufacturer but Toto simply makes the best toilets
and washlets. They usually have to be special ordered through plumbing stores and cost a bit more than others but pay for themselves over the years in readability and less water usage. Never having to flush twice is nice of course as is saving on toilet paper, but waking up in the middle of the night in a chilly house and seating yourself on a warm washlet is, well, priceless.
Charlie