Software that can monitor person’s location for at least 3 handheld devices
I would like to ask if there's any new software available in the market that can monitor person's location? Is there any added hardware that is needed to be installed to make this run? What are the system requirements for this? Can integrate my desktop computer and my android phones and monitor everyone? How much is it or is it for free? What are the features included that makes it state-of-the-art software from the other applications?