The real challenge comes when govt controls / shuts down the underlying nodes – cell towers, mobile providers and ISPs. Communication patterns in a rioting cro

The real challenge comes when govt controls / shuts down the underlying nodes – cell towers, mobile providers and ISPs. Communication patterns in a rioting crowd is vastly different from your average friendly FaceTime chat, but most of the messaging solutions aren't designed for it. I.e. I would be glad to not having offline storage, near real-time delivery or video calls option, if the app allows me to send message "I'm at the point A and I'm fine" to my friend, even if the mobile network is disrupted. As far as I'm aware it's still a largely unsolved messaging problem.