This is a collection of media buzz words strung together to create an article, it's about as insightful as claiming that network analysers can spy on network data.
I wonder why he only used one pi per channel though, I think they have the horsepower to sniff perhaps three.
Since the Pi takes 5V just like any USB device, he could re-use the same power adapter and just get a splitter USB cable; he didn't need a full blown powered USB with its own power adapter.
I wonder why he only used one pi per channel though, I think they have the horsepower to sniff perhaps three.