Kill switch is a new technology that would turn your phone into a dead lock status in the case of rubbery. So a stolen phone will be unusable. Simply you need to define special password for this functionality, and each time for using the phone this codes are necessary. This technology is on progress and supposes to be officially available on Smartphones on 2015. After many cell phone robberies have happened during recent years especially in some of major American cities, this solution seems to be very useful to decrease rate of cell phone robberies.