Many people still seem to not be aware of EXIF data and the information it provides anyone that wants to view it. EXIF data is attached to image files as well as other files and provides all sorts of details from file creation time to exact GPS coordinates. This is the type of data that was extracted from an image uploaded by Vice Magazine that gave away John McAfee’s location when he escaped Belize. On Backtrack Linux there are numerous tools to extract EXIF data including exiftool which is written in Perl and easy to use. Below we will describe exiftool, which is located in /pentest/misc/exiftool/ or /usr/bin, and provide examples to show how easy it is to use.
Yesterday I wrote an article on viewing iPhone image GPS data via Photoshop on the Mac but since not everyone has the need to have Photoshop along with the fact that Photoshop is not cheap I also wanted to show a way to view iPhone image GPS data without having to install any third party software on your Mac. You can easily view iPhone image GPS data using Preview which is installed by default on Mac OSX. Below I describe how to view iPhone image GPS data using the same example image from yesterday with Preview.
Below I will provide instructions on how to update the My Location setting for both an IPhone and an iPod Touch and while the iPod Touch requires a bit more work both are fairly simple considering all of the functionality that will be available to you again through the My Location setting.