Here is my new idea. Someone stole my iPhone, but they are apparently still using it because they called me a couple days later after having it be stolen. Can I convince the thief to send me a photo and get his coordinates from the metadata by using exifprobe? I'm thinking I can convince the thief to send a photo of the moon by saying something like "How has it been, [myname]. It's been a while. The moon looks so nice from over here, you should send me a photo of what it looks like on your side. How are the kids?"
Also, the friend I would be using to ask the thief to take a picture would be someone on the other side of the planet, so that person would have to send the image to me for processing, but I think that uploading the image strips the metadata sometimes.