Software that detect/report location of lost computer or smartphone

This software will consist of 2 parts: -monitoring agent that runs on user computer and report location to web site -web site that save reported location to DB and show it to user any time later This software will use 3 methods to detect location: 1) GPS 2) IP detection (from where we can obtain ISP and username or new user) 3) ISP and username of new user detected by monitoring agent on client computer and reported to server computer so IP detection not used Method #2 has patent protection in some countries so it will be possible to disable using this method and using method #3 instead. This software will run undetectable on user computer or smartphone and every 24 hours make HTTP connection to our web site. For example, [login to view URL] [login to view URL] will detect IP address of these connections and save it to log file(time of connection, IP address, computer id, etc) Than customer can provide IP address and time of connection(or ISP and username) to police that they can contact Internet Service Provider company and find out name and address of user who was owner of this IP at that time. Can you make it so that it will be difficult to find this program and delete? Thank you