Anyone that's received pictures via text from him, run the pictures through an exif viewer. Maybe he slipped up somewhere and allowed his phone to embed the gps coordinates. You can use this program for Windows to read all of that hidden data.
http://www.softpedia.com/get/Multimedia/Graphic/Digital-Photo-Tools/KUSO-Exif-Viewer.shtml#download
Also, he's definitely reading this thread and probably freaking out. It would not surprise me to hear that he's infiltrated this thread using another username / IP in an attempt to inject false information into the mix. Stay vigilant and be careful.
http://www.softpedia.com/get/Multimedia/Graphic/Digital-Photo-Tools/KUSO-Exif-Viewer.shtml#download
Also, he's definitely reading this thread and probably freaking out. It would not surprise me to hear that he's infiltrated this thread using another username / IP in an attempt to inject false information into the mix. Stay vigilant and be careful.