I believe that there is potentially a way to utilize wifi frequency signals from routers as well as RF waves from cell phones and towers to create a feedback loop that interacts with, or at least gathers information from, biological organisms and ultimately brain waves. I have seen documents of questionable authenticity but would have to do a fair bit of digging through my files to find them. DARPA is into some insane shit. If you can dream it, chances are, they've found a way to do it. Whether this tech can remotely influence brain waves, or simply detect them, remains unknown. But, I'm guessing it can. Think about the progression in tech from the mid 90s to today. Chances are, most of these developments have been known to certain governments for at least a decade before they were released for public use. Beamforming could certainly direct RF energy towards a human being in a targeted manner. It is simply a matter of assimilating the return signals as they bounce back. Perhaps our thoughts and brain states induce a minute change in this energy. With sophisticated enough tech (possibly within the scope of a wifi router or smartphone wireless chip when coupled with classified software packages), it's not crazy to surmise that the possibilities are numerous.