Standardised pictures are needed to avoid confusion in Japan's smart toilets.
Japan's toilet chiefs say they have come up with a plan to stop tourists getting their knickers in a twist over the country's mind-bogglingly high-tech loos.
Under new guidelines, manufacturers will use the same eight pictograms to tell users which button flushes, which one fires a frighteningly accurate jet of water at the backside and what to press to close the lid.
