[OSM-talk] Fwd: Why doesn't OSM ?

Matt Amos zerebubuth at gmail.com
Sun Dec 27 14:36:53 GMT 2009


On Sun, Dec 27, 2009 at 11:43 AM, Aun Johnsen <lists at gimnechiske.org> wrote:
> On Sun, Dec 27, 2009 at 9:26 AM, Liz <edodd at billiau.net> wrote:
>>
>> On Sat, 26 Dec 2009, Frederik Ramm wrote:
>> > 1. What do we want to protect?
>
> The data is fully open, but some people want to reduce their fingerprint on
> the data to protect themselves, for example they submit their GPX tracks
> privately so it will not be possible to derive from them where he lives or
> works. This doesn't mean he is holding back data, he only chooses to give it
> without his fingerprints.

this isn't quite the case. even if tracks are submitted privately it
may be possible to find common locations such as home and work from
the anonymous points. then it also might to possible to find
corresponding local editing to get the user. for example, some of the
calculated home locations from http://stat.latlon.org/ are quite
accurate - mine is only about 200m from cloudmade's offices, where i
used to work.

if you are really very concerned with your privacy: don't upload
tracks which include your home or office locations at all.

cheers,

matt




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