How do I make a tracking progamme to track a device ?

Answer 1

Said device/platform needs to have some sort of location API which you can use in your code. E.g.

https://stackoverflow.com/questions/33227544/which-api-to-use-to-access-gps-location-on-the-android-device-android-api-or-t

Answer 2

I'd use a programming language to do it. That works out best for me when I need to track my wife... I mean.. uhhh what? I'm only joking, neither of us is insecure, lack trust, or are oblivious to when a relationship should end. ;)

Answer 3

Start learning and continue to learn until you gain the ability to Google how to make it.