Phones can disable cars, homes, electrical systems
                                
                                
                                    (Newser) -
                                    As we all know, smartphones are terrific tools—but in the wrong hands they can become weapons capable of mass murder,  Vanity Fair  reports. Terrorists already use them to trigger bombs, but tech-security experts are finding that phones can also shut off pacemakers, make cars crash, hijack houses, exhaust batteries...