FBI and Always Listening Technology

It is no secret that we live in a world that is full of technology and that technology is constantly evolving; becoming faster, smaller, and as a recent article that I read points out - always listening. We may not think much about the hands free Siri option or asking Alexa to play music for us, but a Journalist recently sent in a request under the Freedom of Information Act to the FBI to see if they have wiretapped the Amazon Echo. 

Their response - they did not confirm or deny it. 

If this is the case where they can listen into conversations when the hardware is “off” but listing for a prompt, that is truly a scary thought. My hunch is, and this is only a hunch, the FBI would have to get some sort of signature to authorize tapping this device, but based on the secrecy behind many search warrants, we may never actually find out. And if an arrest occurs based on these always listening devices, the government may not want to prosecute too heavily in order to keep how they do this quiet. 

Here is a link to the full article: 
http://paleofuture.gizmodo.com/the-fbi-can-neither-confirm-nor-deny-wiretapping-your-a-1776092971