some ideas from Corona Virus "Stay at Home" order
Fairlight
fairlite at fairlite.com
Mon Mar 23 11:56:34 PDT 2020
The unwashed masses...those are the ones spreading COVID-19, right? :)
(Too soon???)
m->
On Mon, Mar 23, 2020 at 02:52:36PM -0400, Laura Brody thus spoke:
> As computer geeks, we have the technical skills to do that. The great
> unwashed masses don't even know that the GPS info in a photo exists. That
> is the difference.
> Laura Brody
> On Mon, Mar 23, 2020 at 2:40 PM Fairlight via Filepro-list
> <[1]filepro-list at lists.celestial.com> wrote:
>
> I would fight that -so- hard. That information is easily spoofable.
> That's like relying on non-PGP-signed emails as 'evidence'. Prove it
> really went down that way, and wasn't forged.
>
> You could download any image from FB or Twitter, re-encode it with
> different EXIF information, and provide 'evidence' of anything you like.
>
> [2]https://www.dpreview.com/forums/thread/3229130
>
> See the post by 'apaflo' in that thread, specifically.
>
> m->
>
> On Mon, Mar 23, 2020 at 02:25:11PM -0400, Laura Brody via Filepro-list
> thus spoke:
> > I read an article that said that the police have used the GPS info in
> > photos to find people that have a social media account, but are
> "missing".
> > Teens that ran away, etc Once they know where the photo was taken,
> they
> > have the state and county to start looking for that person. I guess
> that it
> > could also be used in a legal case. What if someone had video or
> pictures
> > that prove something, but when you extract the GPS info, turns out
> that the
> > event was several miles away from what the person claimed. Fraud and
> > perjury. And they are busted. I guess that there are other uses too, I
> just
> > can't think of any.
> >
> > Laura Brody
> >
> > On Mon, Mar 23, 2020 at 1:43 PM Bob Rasmussen via Filepro-list <
> > [3]filepro-list at lists.celestial.com> wrote:
> >
> > > On the topic of GPS coordinates: what use case can you think of for
> this?
> > > I've been aware of geotagging (an dother EXIF data) in photos and
> videos
> > > for years, and have written code to extract that data from the
> files, but
> > > have not come up with many use cases. Ideas?
> > >
> > > On Mon, 23 Mar 2020, Richard D. Williams via Filepro-list wrote:
> > >
> > > > Sometimes I think of some neat things I've done over the years and
> just
> > > feel
> > > > like sharing.
> > > >
> > > > Here are a few: (linux OS)
> > > >
> > > > Merge PDFs into a single new PDF:
> > > > /usr/bin/gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite
> > > -sOutputFile=file_new.pdf
> > > > file1.pdf file2.pdf
> > > >
> > > > Extract Pages from a PDF:
> > > > i.e. page 1-4
> > > > /usr/bin/gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -dFirstPage=1
> > > -dLastPage=4
> > > > -sOutputFile=file_new.pdf file1.pdf
> > > >
> > > > Extract Pages from page # to end:
> > > > /usr/bin/gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -dFirstPage=2
> > > > -sOutputFile=file_new.pdf file1.pdf
> > > >
> > > > Get the numbers of pages in a PDF:
> > > > /usr/bin/pdfinfo file1.pdf | grep "Pages:" | sed s/"Pages:"//g |
> sed s/"
> > > "//g
> > > > i.e.
> > > > 8
> > > >
> > > > Get the Lat/Long from a JPG image:
> > > > exiftool -n -gpslatitude -gpslongitude file2.JPG
> > > > i.e.
> > > > GPS Latitude          : 31.4998652777778
> > > > GPS Longitude          : -100.448014444444
> > > >
> > > > I hope someone finds this useful.
> > > >
> > > > Be safe out there,
> > > >
> > > > Richard D. Williams
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > --
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> > > Regards,
> > > ....Bob Rasmussen,  President,  Rasmussen Software, Inc.
> > >
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