The mobile-phone industry doesn’t see things the same way. The Cellular Telecommunications & Internet Association (CTIA) insists that kill switches aren’t necessary. They assert that users should instead password-protect their handsets and install third-party apps, such as Prey or Cerberus, that offer kill-switch-like functionality. In reality, most people aren’t that careful. According to a Consumer Reports survey, less than half of users set a passcode on their device. For those that do, some of the most-popular PINs are still “1234,” “1111,” and “0000.” Also, two thirds of users prefer to remain logged into any accounts. A lost phone can be a goldmine.