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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>      > > ....Bob Rasmussen,   President,   Rasmussen Software, Inc.
>      > >
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