How fast is that? What's the latency for initiating communication and the roundtrip after the communication is initiated? Because it always irks me with bluetooth and wi-fi, why does it takes ages to connect? Why not 100 msec?

Is it Point-To-Point or Broadcast or both? Can you subscribe to a class of messages even if they aren't sent to you explicitly?

What's with auth and encryption? Something cryptographically sound?

Sorry for not diving into the docs because that's what I would like to see on that page. And please, no video.