5th gen warfare lad. Look up Darpa N3 technology, that is the newer iterations of this shit. The microwave audio effect / frey effect has been known about since the 50's.

You can use stuff like gunnplexers to do this shit as well.

The V2K shit is only good for putting voices into peoples heads.. You need a hell of a lot more technology to do proper synthetic telepathy. As a comms device.. Fuck it whatever, who cares.

But when you pair this type of shit with lack of consent, hook it up to chat bot scripts and use the shit to psychic drive folks that is when it becomes and issue.