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Blackberry Geotagging

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(@ccorlett7)
Posts: 14
Active Member
Topic starter
 

Hi everyone,

Just a quick question. Does anyone on here know much about the Geotags stored on Blackberrys?

I am currently trying to work out how they are stored/encoded within a photograph? I have loaded the photographs into EnCase and, with other phones, the longitude and latitude is stored within the Hexadecimal of the file.

Does anyone know how it appears for Blackberrys? Its not in plain text and theres no visible clues that may point to the long and lat values.

Any help would be much appreciated
Thanks

 
Posted : 11/02/2011 7:47 pm
(@alexc)
Posts: 301
Reputable Member
 

If it conforms to Exif the long and lat should be under tags 2 and 4 stored as 3 floating point numbers (degrees, minutes, seconds)

Tags 1 and 3 will contain N or S / W or E as references for the lat and long.

If that's the case any image viewer that does GeoExif will see it (something like geosetter? http//www.geosetter.de/en).

Another option I suppose is that RIM put them in the maker notes instead (tag 927c) - which is just a blob field I think, so is kinda up to them what's stored there. Seems weird to do that though…

 
Posted : 11/02/2011 8:20 pm
(@ccorlett7)
Posts: 14
Active Member
Topic starter
 

Can I ask what you mean by under tags 2 and 4?

I just have the file viewed in Hexadecimal at the minute and trying to find it that way.

 
Posted : 11/02/2011 8:27 pm
(@alexc)
Posts: 301
Reputable Member
 

Have you tried any image viewers that show geotag data? Will be easier than going in through the hex!

But if you're determined to do it at hex level (good on ya!) you can get the Exif Specs here http//www.exif.org/specifications.html - that explains the tag structure (it's a technical spec so it's pretty 'dry' reading!) Probably worth getting hold of the TIFF one as well as many of the concepts are similar and if I remember, the TIFF one is easier to understand- might make reading the Exif one easier!

Oh, and I was mistaken about the floating point thing - each part of the lat and long (degrees, min, sec) are stored as two 32bit integers each, as a rational fraction (1st 32bit number/2nd 32bit number), apologies.

 
Posted : 14/02/2011 2:40 pm
(@ccorlett7)
Posts: 14
Active Member
Topic starter
 

ah thats brilliant, cheers mate.

Which image viewers do you recommend?

I only need to find out where it is stored within the EXIF so that I can program my application to find the correct values for Blackberry phones, meaning that just the viewer may well be enough.

cheers

 
Posted : 15/02/2011 2:16 am
 Doug
(@doug)
Posts: 185
Estimable Member
 

There are plenty of viewers out there, here is a pretty good freeware one
http//www.opanda.com/en/iexif/

If you are on Windows 7 you can just right click > 'Details' and this will show you all the EXIF data including any geo location data.

 
Posted : 15/02/2011 1:53 pm
Redcelica67
(@redcelica67)
Posts: 130
Estimable Member
 

I like PhotoME and TagView

 
Posted : 15/02/2011 2:20 pm
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