Earlier quoted context omitted.
Oh wow, I didn't think of that when I saw this, but you're right. With this, I could place devices everywhere, in my car, my summer house, my garden, wherever, and they could all communicate with a central server. I should probably work faster on that secure messaging protocol for embedded devices I wanted to design.
Something like shh?
Do you mean SSH? No, it's basically ECC keys that devices can sign their requests/responses with, over a message queue, combined with a simple pairing protocol to "trust" keys on initial setup.