All of these devices have been reverse-engineered and packet sniffed to death, and no one has ever produced any evidence that they're doing anything other than what it says on the box.
While I do appreciate that the cited sources in their paper, I would have appreciated actual information security papers rather than mainstream media articles.
They left 4 related articles in the publication please read the actual paper before criticizing it.
> and widely disproven
I personally never heard of it. Any evidence?