So my phone can be tracked anywhere. Can I make it stop?

The story on surveillance technology that can track cell phone users anywhere in the world left some readers with a question: What can they do, short of tossing their phones into the sea, to keep their locations private?

The answer is, individually, not much if you are an ordinary cell phone user. As long as your phone connects to a carrier’s cellular network, the carrier must keep records of your location. Sophisticated users can opt for personal solutions: Encrypted e-mail or apps that use the Internet, rather than cell phone networks, to carry calls.