Earlier this year, Google released its own anti-theft tracking service for Android devices dubbed Android Device Manager (ADM). While the service does what its meant to, it does not take true advantage of Android openness.
Long before ADM was even available though, Cerberus has been my anti-theft client of choice, largely because of its ability to work over SMSes and the other advanced features it offers. Today, the developer has made new account registrations for the service free, in order to celebrate its third launch anniversary, making it a good time to grab the app.