Why don't non-china mapping companies have a table of these offsets and simply apply them everywhere (well, maybe except chinese IP adresses) ?
It seems a tiny amount of work compared to, say, gathering the actual street data itself; and it would be an useful thing to make this data available to the public like openstreetmap data.
It seems a tiny amount of work compared to, say, gathering the actual street data itself; and it would be an useful thing to make this data available to the public like openstreetmap data.