National

Local Police Departments Invest In Cell Phone Spy Tools

As we depend on our cell phones more and more, the tools to peek into our phones are getting better. Local police departments across the country are investing heavily in this technology. And, with few laws governing what police can collect and store, that has a lot of privacy advocates alarmed. NPR's Robert Siegel talks to City Lab reporter George Joseph about the spread of tools that let police collect cell phone data.