[marcan_42]

There is always going to be some leakage. The question is whether you can get a high enough signal to noise ratio to get any useful information about it.

What this guy is doing is what he always does: deliberately modulate the signal (in this case, sending packets slowly) at a very low rate and encoding information in that. Of course that works; it always does. It's not news and it has no research value. It's obvious that you can take any system that produces measurable emissions and then drive it in such a way to encode low-bandwidth data in those emissions.

It would be nice if he actually studied practical channel bandwidths and determined just how much information you can transmit with these techniques, but he doesn't have the chops for that. He just cranks out minimum viable PoCs to get the news cycle, using misleading clickbait headlines.