Prey lets you keep track of your laptop, phone and tablet whenever stolen or missing — easily and all in one place. It’s lightweight, open source software that gives you full and remote control, 24/7.
Basically you install a tiny agent in your PC or phone, which silently waits for a remote signal to wake up and work its magic. This signal is sent either from the Internet or through an SMS message, and allows you to gather information regarding the device’s location, hardware and network status, and optionally trigger specific actions on it
Prey uses either the device’s GPS or the nearest WiFi hotspots to triangulate and grab a fix on its location. Grab a screenshot of the active session — if you’re lucky you may catch the guy logged into his email or Facebook account!. Hide your Outlook or Thunderbird data and optionally remove your stored passwords, so no one will be able to look into your stuff.