We can use this device for tracking any thing ,just by sensing sms to our gps tracker and it will send back the location link of the gps module by sms to our cell phone ,by clicking that that we can see the location of our tracker on the google map.We can use this device for spy purposes to track some one ,to track some ones car location,or track any thing in which we will put our gps tracker.it will continue run for 24-48hours