I wasn't sure if this was a joke when I saw the title, as something similar to this was the premise for the "Seinfeld reunion" episode of Curb your Enthusiasm.

I wasn't sure if this was a joke when I saw the title, as something similar to this was the premise for the "Seinfeld reunion" episode of Curb your Enthusiasm. > ...George Costanza...made a fortune by devising an iPhone application called the iToilet, which directed the user to the nearest decent public toilet anywhere in the world https://en.wikipedia.org/wiki/Seinfeld_%28Curb_Your_Enthusiasm%29 https://en.wikipedia.org/wiki/Seinfeld_%28Curb_Your_Enthusia... However, private restrooms like proposed here don't sound like too bad an idea! I suspect there will some people who will be willing to pay for them. :-)