In Japan, groping women and taking pictures up their skirts is a very very common practice among men. That's why they have women only passenger cars on trains[1

In Japan, groping women and taking pictures up their skirts is a very very common practice among men. That's why they have women only passenger cars on trains[1]. The camera sounds are there to deter this behavior. [1] http://en.wikipedia.org/wiki/Women-only_passenger_car http://en.wikipedia.org/wiki/Women-only_passenger_car