It's been common knowledge for a while that the government tracks and listens in on cellphones using a technology called StingRay. However, not much is known about how it works or how many agencies and police departments use it.
Now we know why. The company that manufactures the StingRay devices, Harris Corporation, keeps the lid on how the gadgets work by requiring anyone who uses it to sign a non-disclosure agreement.
Remember the guy who got the deal of a lifetime after being arrested for armed robbery? He got it thanks to the StingRay non-disclosure agreement. But there are people working to uncover the secrets of this weapon, for better or for worse.