Yep. The company I work for built something exactly like this [1] when we were sharing two single stall bathrooms with a floor that, during the day, was occupie

Yep. The company I work for built something exactly like this [1] when we were sharing two single stall bathrooms with a floor that, during the day, was occupied by somewhere around 40 people. And then we moved to an office with multi-stall bathrooms and it wasn't necessary anymore. [1] http://pee.mover.io http://pee.mover.io -- still up because we gifted it to those left behind (though I don't know if it's still functional).