Or did I understand your post incorrectly?
If I didn't then I am uncertain how we can help. Sorry.
I recently found someone that had some kind of program on his computer (a MacBook Pro)that allowed him to find out when people were sending Text Messages around him, and how far away from him they were. I thought that this was an awesome program. I just wanted to find out if anyone knew anything about a program like this, or if it was self-made by him, if anyone knew how to do this.