On Mon, 6 Mar 2017 11:53:34 +0000, Mauro Santos via arch-general wrote: >I think the point here is not so much privacy, as I believe everyone >recognizes that the information that was asked for (the full list of >usernames) is public
It's not per se forbidden to take a photo of a public location, it's even allowed to take the photo and to publish the photo, if a girl randomly is on that photo, too. It is forbidden to provide a collection of such photos to somebody else, who needs such photos for a porn website. Now "research" isn't "porn", but subtleties could make it hard to decide how to handle something like this. That something is public, doesn't mean that privacy could be ignored.
