In Japan, the houses are so close to the road that you can even see what's going on in their rooms, kitchen, garden and so on. At some place, you can see inside both side of the houses if you are standing on a truck cargo area. The fence height and regulated distance from the road is setup differently then here. A stranger taking photo of your home is unavoidable but they can't do it the "mass production" way and so fast. Google street is good, but they need to make some adjustment to the equipments to avoid this.