This fails if: 1) If you can see over the fence... 2) If it shows up in Google Maps ;) #2 might be implausible now, but if people get really accustomed to th

This fails if: 1) If you can see over the fence... 2) If it shows up in Google Maps ;) #2 might be implausible now, but if people get really accustomed to this, I guarantee that some handymen are going to tile/spraypaint large, permanent drop points in their yards.