<div dir="ltr"><div>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.</div><div><br></div><div>Laura Brody<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Mar 23, 2020 at 2:40 PM Fairlight via Filepro-list <<a href="mailto:filepro-list@lists.celestial.com">filepro-list@lists.celestial.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">I would fight that -so- hard. That information is easily spoofable.<br>
That's like relying on non-PGP-signed emails as 'evidence'. Prove it<br>
really went down that way, and wasn't forged.<br>
<br>
You could download any image from FB or Twitter, re-encode it with<br>
different EXIF information, and provide 'evidence' of anything you like.<br>
<br>
<a href="https://www.dpreview.com/forums/thread/3229130" rel="noreferrer" target="_blank">https://www.dpreview.com/forums/thread/3229130</a><br>
<br>
See the post by 'apaflo' in that thread, specifically.<br>
<br>
m-><br>
<br>
<br>
On Mon, Mar 23, 2020 at 02:25:11PM -0400, Laura Brody via Filepro-list thus spoke:<br>
> I read an article that said that the police have used the GPS info in<br>
> photos to find people that have a social media account, but are "missing".<br>
> Teens that ran away, etc Once they know where the photo was taken, they<br>
> have the state and county to start looking for that person. I guess that it<br>
> could also be used in a legal case. What if someone had video or pictures<br>
> that prove something, but when you extract the GPS info, turns out that the<br>
> event was several miles away from what the person claimed. Fraud and<br>
> perjury. And they are busted. I guess that there are other uses too, I just<br>
> can't think of any.<br>
> <br>
> Laura Brody<br>
> <br>
> On Mon, Mar 23, 2020 at 1:43 PM Bob Rasmussen via Filepro-list <<br>
> <a href="mailto:filepro-list@lists.celestial.com" target="_blank">filepro-list@lists.celestial.com</a>> wrote:<br>
> <br>
> > On the topic of GPS coordinates: what use case can you think of for this?<br>
> > I've been aware of geotagging (an dother EXIF data) in photos and videos<br>
> > for years, and have written code to extract that data from the files, but<br>
> > have not come up with many use cases. Ideas?<br>
> ><br>
> > On Mon, 23 Mar 2020, Richard D. Williams via Filepro-list wrote:<br>
> ><br>
> > > Sometimes I think of some neat things I've done over the years and just<br>
> > feel<br>
> > > like sharing.<br>
> > ><br>
> > > Here are a few: (linux OS)<br>
> > ><br>
> > > Merge PDFs into a single new PDF:<br>
> > > /usr/bin/gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite<br>
> > -sOutputFile=file_new.pdf<br>
> > > file1.pdf file2.pdf<br>
> > ><br>
> > > Extract Pages from a PDF:<br>
> > > i.e. page 1-4<br>
> > > /usr/bin/gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -dFirstPage=1<br>
> > -dLastPage=4<br>
> > > -sOutputFile=file_new.pdf file1.pdf<br>
> > ><br>
> > > Extract Pages from page # to end:<br>
> > > /usr/bin/gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -dFirstPage=2<br>
> > > -sOutputFile=file_new.pdf file1.pdf<br>
> > ><br>
> > > Get the numbers of pages in a PDF:<br>
> > > /usr/bin/pdfinfo file1.pdf | grep "Pages:" | sed s/"Pages:"//g | sed s/"<br>
> > "//g<br>
> > > i.e.<br>
> > > 8<br>
> > ><br>
> > > Get the Lat/Long from a JPG image:<br>
> > > exiftool -n -gpslatitude -gpslongitude file2.JPG<br>
> > > i.e.<br>
> > > GPS Latitude : 31.4998652777778<br>
> > > GPS Longitude : -100.448014444444<br>
> > ><br>
> > > I hope someone finds this useful.<br>
> > ><br>
> > > Be safe out there,<br>
> > ><br>
> > > Richard D. Williams<br>
> > ><br>
> > ><br>
> > ><br>
> > ><br>
> > ><br>
> > > --<br>
> > > This email has been checked for viruses by AVG.<br>
> > > <a href="https://www.avg.com" rel="noreferrer" target="_blank">https://www.avg.com</a><br>
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> > Regards,<br>
> > ....Bob Rasmussen, President, Rasmussen Software, Inc.<br>
> ><br>
> > personal e-mail: <a href="mailto:ras@anzio.com" target="_blank">ras@anzio.com</a><br>
> > company e-mail: <a href="mailto:rsi@anzio.com" target="_blank">rsi@anzio.com</a><br>
> > voice: (US) 503-624-0360 (9:00-6:00 Pacific Time)<br>
> > fax: (US) 503-624-0760<br>
> > web: <a href="http://www.anzio.com" rel="noreferrer" target="_blank">http://www.anzio.com</a><br>
> > street address: Rasmussen Software, Inc.<br>
> > 10240 SW Nimbus, Suite L9<br>
> > Portland, OR 97223 USA<br>
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