Please go to http://www.myphonetrack.com/reg to get your reg code and set up your app.
myphonetrack is an application which track your iphone in realtime on much of tracking servers worldwide.
The only restriction is that program run in foreground of iPhone.
The app have an SOS and Stop SOS button too, this is for special Points like emergency here the servers send out to predefined mail addresses or phone numbers emergency messages with address details.
Some of servers are completely free with special interface to free mapping programs.
Continued use of GPS running in the background can dramatically decrease battery life.