If such technology exist, it's beginning would seem to go back to at least 1972.
https://www.nwbotanicals.org/oak/newphysics/synthtele/synthtele.html
> I first became aware of Allan H. Frey's work at Willow Grove in 1972, just after completing "The Holographic Concept of Reality." I was working with Dr. Carl Scheicher (MRU) at the time, and was asked about the significance of this work. Realizing its possible use in mind control, my first reaction was to go on "red alert."
>Full significance was not yet understood at this time. Basically, Frey had discovered another sensory motor input in the higher blue-band frequencies of 0.3-3.0 GHz. - at very low amplitudes of power. It was "as if" we had another type of "vision," but did not know how to "see" what was being received. It constituted the next generation of subliminal communications.