[OSM-talk] Post code areas

[Anthony]

On Thu, Apr 1, 2010 at 6:34 PM, Frederik Ramm <frederik at remote.org> wrote:

> There is a post code database that is officially maintained but it is not
> free.
>

That's...interesting.  Wouldn't any accurate description of the post codes
necessarily be a derivative of that official database?

If you're not sure of the answer maybe this is a question for the legal
list, but what methods, if any, are allowed to create a free database from
an officially defined (non-physical) non-free one?  Basically, you just
launder the data through a bunch of different others until it can no longer
be traced to the original source?  In the end, the source is always
necessarily that officially maintained database.
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