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take a look at this POI on 4sq: http://4sq.com/rArZMj
It starts with a street view. If you zoom in a little, turns out the bar is out in the water! When you switch to Satellite view, the bar is where it is supposed to be, on the shore.
- The map data is scrambled (GPS coordinates are encrypted). - To correlate a GPS position with the map data, you plug the HW position through an encryption library (which you have to compile in a specific government building in Beijing). - Border drawing is strongly regulated: no border line between Mainland China and Taiwan, Tibet is of course China, South East Asia Islands can't have border lines drawn and Kashmir is a big thing also with border lines. - You can't show pure GPS coordinates - You can't include a number or POIs in your map (mostly government buildings/facilities).
As a note, India as a certain degree of insanity as well: You can't export a map. Launching a PND there involved shipping a bunch of map technicians there to actually make sure we never got a map outside of India...
Cheers, R
There's a couple of regulations for selling GPS enabled devices in China (I am a software guy on a major PND manufacturer with products being sold in China). - The map data is scrambled (GPS coordinates are encrypted). - To correlate a GPS position with the map data, you plug the HW position through an encryption library (which you have to compile in a specific government building in Beijing). - Border drawing is str…
what is the advantage of this? couldn't an attacker get a copy of the software? is there some kind of real-time authorisation step so that they can disable the transformation or change it?
[edit: thanks; wasn't thinking you thought it a good idea, just curious for more info]
Trying to get satellite and the map portions to line up is very difficult. Trying to do it on a global scale with data from multiple sources... you get the idea.
Now please get back to China bashing and don't let the facts get in the way of your political/religious feelings. Remember to include lots anecdotal evidence and use the word red. And as always bring up other countries that seem scary on fox news.
There's a couple of regulations for selling GPS enabled devices in China (I am a software guy on a major PND manufacturer with products being sold in China). - The map data is scrambled (GPS coordinates are encrypted). - To correlate a GPS position with the map data, you plug the HW position through an encryption library (which you have to compile in a specific government building in Beijing). - Border drawing is str…
There's a couple of regulations for selling GPS enabled devices in China (I am a software guy on a major PND manufacturer with products being sold in China). - The map data is scrambled (GPS coordinates are encrypted). - To correlate a GPS position with the map data, you plug the HW position through an encryption library (which you have to compile in a specific government building in Beijing). - Border drawing is str…
so what you're calling scrambling/encryption is actually a transformation? the encryption library transforms the coordinates so that they match the distorted map? what is the advantage of this? couldn't an attacker get a copy of the software? is there some kind of real-time authorisation step so that they can disable the transformation or change it? [edit: thanks; wasn't thinking you thought it a good idea, just curi…
I'm not questioning the advantage (in my view it's a small roadblock if you're motivated enough to actually get the data) just stating an inane regulation...
This is not a problem with using a GPS, the problem is the shift from using different mapping technologies. Trying to get satellite and the map portions to line up is very difficult. Trying to do it on a global scale with data from multiple sources... you get the idea. Now please get back to China bashing and don't let the facts get in the way of your political/religious feelings. Remember to include lots anecdotal e…
I don't know if the author's analysis is accurate, but I'm pretty sure the author is Chinese. I doubt he is repeating what he hears on Fox News.
This is not a problem with using a GPS, the problem is the shift from using different mapping technologies. Trying to get satellite and the map portions to line up is very difficult. Trying to do it on a global scale with data from multiple sources... you get the idea. Now please get back to China bashing and don't let the facts get in the way of your political/religious feelings. Remember to include lots anecdotal e…
An example in Shanghai: http://g.co/maps/m34n8 An example in Seoul: http://g.co/maps/4gk3t
Note the near perfect alignment in the latter, and way-off alignment in the former.
Is OpenStreetMaps blocked in China? If not, there could be huge precedence to subvert this.
OSM is banned in China [0]. [0] http://wiki.openstreetmap.org/wiki/WikiProject_China#Legalit...
The problem of OSM in China is its limited data-set. For example, in the city I developed the project OSM had only the major streets, and the map was quite old.