[AlexDanger]

Imagine the applications for the military and the intelligence services;

- Completely bypass any EM shielding / faraday cages designed to stop spies / bugs from transmitting information out of secure facilities

- Transmit information out of underground facilities or caves deep in Afghanistan without worrying about RF attenuation. Indeed, communicate anywhere in the world (or under the sea) without worrying about RF attenuation.

Bypassing the limitations of sending information by RF would be hugely advantageous for the military and intelligence services. The resources of the military industrial complex are staggering. What is the state of the art in unclassified technology regarding generating these waves and modulating them? What would be required to make such transmitters/receivers practical? A breakthrough in materials / fabrication technology? It sounds like the theory is solid, and it's a now an applied science problem?

[klunger]

In that case, you would need to be the only actor who has the technology. Otherwise you have to worry about all the issue you cited again.