How would i go about checking if my software I created has moved computers?

there is no point tring to prevent it from being illegally downloaded for as long as there is internet and someone wanting the program they will download it... its just to easy to do but there is this pic that says illegal downloads support comunism so i would put a demo on youtube then end with that pic. also theyre is a legal program called deamon tools which makes your computer think the disk is in.