The "chem trails" we've been seeing since the 70's are probably what they will use.
There is a piss ton of research into this in the public domain.. Some people are already actively being monitored and harassed with this type of technology sadly.
We stand at a scary point in history with the technology to do this sort of thing. 1984 thought police is almost certain to be rolled out here sooner than later on the entire population.
There’s a lot being done without our permission. Sometimes I wonder if Apple or Samsung is streaming audio/visual from phones connected to the Internet, and storing them somewhere for future use. It’s like that SnapChat thing. All those texts and pics gotta end up somewhere lol
Would not surprise me in the slightest.. the Intel IME leak and the subsequent "zero days" that came from them essentially back dooring the hardware was pretty nasty.