Turn a phone into a GPS tracker. Gps Tracker Constant sends GET requests with a geolocation information to your script URL in the background with a set update interval until you press "Stop sending your location" button.

If you want location updates every 3 seconds it'll give one every 3 seconds.

GET requests sample:

"GET /gps.php?password=gps&latitude=40.715981&longitude=-74.002881 HTTP/1.0"

where
gps.php - a name of your script
password - an user ID

Sample of gps.php
...
$latitude = $_GET['latitude'];
$longitude = $_GET['longitude'];
$password = $_GET['password'];
...

Please note that this utility is primarily for software developers!
You can use this app to build your geolocation services without wasting time developing such a client application.

We use such app for our www.roadsideassistance24.com tow truck service. You can test our similar free Roadside Assistance 24 Driver app before the purchase.

This is not a spyware application, the user always knows that his location is being sent.