In a world first, Sendai City in Japan has tested a tsunami early warning system using drones and a connected network developed by Nokia. The innovations will enable first responders to react faster and help guide people to safety.
https://www.dac.nokia.com/applications/nokia-drone-networks/
https://www.nokia.com/about-us/news/releases/2019/11/12/nokia-joins-sendai-city-in-worlds-first-test-of-private-wireless-connected-drones-for-tsunami-evacuation-alerts/
Source: Nokia YouTube
—