Three million smartphones were stolen last year nationwide. In Los Angeles alone, 3000 were taken away. Legislators in Sacramento are considering a new law to require a "kill switch," so you could disable your phone, making it useless to thieves. For the moment, iPhone owners have an alternative, an app called "Find My iPhone." New York Times reporter Ian Lovett wrote about how that worked for Sarah Maguire in West Covina. Maybe that worked for Maguire, but law enforcement says chasing after your stolen cellphone can lead to unintended consequences.