How hackers are using Bluetooth to track police activity

Cops use all sorts of tech to track individuals -- facial recognition comes to mind, as does mimicking cell phone towers to get pings or mobile data tracking. But some people are finding ways to use technology to listen back. Bluetooth signals might reveal where police are and when they are and when devices like body cams or Tasers are activated. "It's be really weird if you had your volume turned all the way up and all of your devices are just screaming, right?," Alan "Nullagent" Meekins, cofou...