[OSM-legal-talk] License question, user clicking on map

Simon Poole simon at poole.ch
Mon Mar 4 12:46:40 UTC 2013


Am 04.03.2013 13:39, schrieb Jonathan Harley:
> On 04/03/13 11:53, Pieren wrote:
>> On Mon, Mar 4, 2013 at 10:19 AM, Jonathan Harley <jon at spiffymap.net>
>> wrote:
>>
>>> Personally, I think this does leave a loophole where you could reverse
>>> engineer OSM's data from imagery, but as I said at the time, I'm not
>>> worried
>>> about it because so much accuracy would be lost. In any case,
>> Technically, it is possible to export in a format where accuracy is
>> 100% preserved, e.g. any vectorized format like PDF or SVG. If you
>> export all tags in a concatenated text string, your map is maybe not
>> readable for humans but you could in this way rebuild the full
>> database under a new license...
>
> That was touched on last time round, yes. Giving someone a
> vector-format image might count as conveying a database. I think it's
> ambiguous.
>
> The ODbL essentially treats images and databases as though one thing
> can never be both. It's another thing that could usefully be clarified
> in a future version, IMO.
>
There is legal precedent that a map can be both an image (on paper) and
a database (don't forget that we are not discussing databases in a
technical sense). In the end if something like this went to court it is
likely that it would be judged on the intent, not on technicalities.

Simon





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