title: Read Exif GPS info using Delphi
body: <p>I need to get geolocation info from my photos. Lat/Lon and GPSVersion.
  I've already found some info related to this question, I compared different EXIF headers and found a hexadecimal dump that gives me coordinates - now I need to get it from the file.</p>
  
  <p>The question might seem very simple. How do I open a JPEG-file in Delphi to get necessary hexadecimal dumps?</p>
  
  <p>Already tried to read Chars and Integers, but nothing worked. I would like not to use any external libraries for this task if possible.</p>
  
  <p>This is basically my major question, but I'll be extremely happy if anyone could answer one more.</p>
  
  <p>Is there an easy way to search GPS tags without searching the file for specific dumps? Now I'm looking for a strange combination 12 00 02 00 07 00, which really works. I've read EXIF documentation but I couldn't really understand the thing with GPS Tags.</p>