On Wednesday 14 February 2018, Michael Reichert wrote:
> All challenges are run four times, one iteration with full metadata,
> one with timestamp and version fields, one with version field only
> and one without any metadata. [...]

While this seems a useful test to do i wonder how the timestamp and 
version fields are relevant regarding privacy and personal data 

I know a possible answer could be that in combination with personal data 
(like user names or ids) it would provide additional information on 
people.  But this argument applies to *any data* including the geometry 
(i.e. coordinates) and tags.

So what is the special thing from a legal standpoint about versions and 
timestamps compared to geometries and tags?

Christoph Hormann

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