Entanglement may be expanded to groups of particles. Also, I'd like to note that it's not necessarily that the communication is secure, but rather that third-pa

Entanglement may be expanded to groups of particles. Also, I'd like to note that it's not necessarily that the communication is secure, but rather that third-party observation can be detected. That's why the discussion focuses on using this to send keys, and not messages themselves. https://news.ycombinator.com/item?id=12548798 https://news.ycombinator.com/item?id=12548798