The “fly on the wall” graphic is on urinals all throughout the Netherlands (makes sense as ALL their design makes sense )…simple solution to a common problem!
On a related note, our football stadium was one of several across the US that took part in a female-urinal focus group test that lasted about six months. All participants responded with a resounding ‘no’…it’s hard to change people’s perceptions, so even though most all women hover over a toilet anyway, the idea of doing so amongst a row of other women was not appealing. They’re becoming more popular in some areas of South America and Asia, at least.