title: best way to send GPS coordinates to server?
body: <p>Right first time use, be gentle.
  Part of a year long college project, looking for help in the right <strong>direction</strong>.<br>
  Sending/receiving GPS coordinates in realtime(as near as possible) with iPhone 4's</p>
  
  <p>Whats the best approach, was looking at GameKit Q&amp;A here for communicating between phones but am i right in saying it works only on bt and wifi? No good to me iPhones will be out and about.</p>
  
  <p>From what i know, Java RMI would fit this problem lovely but thats Java :-(  Send the coordinates and then have a Server Callback to multiple phones.
  A server would be nice in the middle<br>
  What is the best approach when dealing with iOS?</p>
  
  <p>Cheers</p>
  
  <p><strong>extra edit:</strong><br>
  each of the 20 devices have to know the location of all others. thats the start of my project, the sharing of all their gps locations but in real time, as near as. this problem is like having no wheels on my car its stopping me befor i get started.<br>
  but how to communicate between all devices is my problem for now</p>