Do you guys seriously not understand the difference between
Extreme Low Frequency (ELF) at 3-30 Hz (cycles per second)
versus Near Field Communications (NFC) at 13.56 MHz (million cycles per second)?
I need to enlighten anons a little bit about patents.
To get a patent, you do NOT need to provide a working model.
You do NOT need to prove that it actually works.
You do NOT need to have a working implementation.
All you have to do is convince a patent examiner that it COULD work and that you have described it well enough that a person "skilled in the art", as they say, could build it from your patent.
Big companies often file many more patents than then ever intend to implement. If somebody else ever comes up with the technology or requires it in a future product, the big company with the big patent portfolio will attempt to license its patents and make money from it.
Without ever necessarily building it themselves.
When deciding whether to file a patent, they weigh the cost of patent filing (back in the day, it was over $50,000 when the attorney costs and related costs were added up, often far more if they decided to also file internationally in many countries) against the potential benefit of controlling that technology — whether or not the expect to ever implement it themselves.
So the existence of a patent does not really necessarily mean that the technology that it describes exists, or even can be feasibly implemented.
It suggests that the technology could exist, it definitely gives strong clues that somebody was thinking about that area in a serious way, but does not prove that it actually does.
Um, how do I know?
Well, I DO know and my knowledge is authoritative. Nuf said.