Sharron Bernstein, Reuters:
Thefts involving smartphones have declined dramatically in three major cities since manufacturers began implementing "kill switches" that allow the phones to be turned off remotely if they are stolen, authorities said on Tuesday.
The number of stolen iPhones dropped by 40 percent in San Francisco and 25 percent in New York in the 12 months after Apple Inc added a kill switch to its devices in September 2013. In London, smartphone theft dropped by half, according to an announcement by officials in the three cities.
Related: Apple's page on Activation Lock