Just wonder how they have solved all those interference issues resulting from unsheilded power lines i.e. Cable TV operators get around the interference problem by shielding all of their cables. "Coaxial cable" used by cable TV operators has a braided metal shield that surrounds the signal wire. Telephone cables are also shielded. Power lines, on the other hand, have no shielding.
Also a dedicated band of the radio spectrum at which to vibrate is needed without interference from other sources.
Looks like there are many problems to solve but there has to be some potential especially for newly wired areas, rural areas and in home networks.
