Most of us today rely on cell phones and the internet to communicate with the outside world. These flying networks can deliver cell phone or internet capabilities for several hours in areas not easily obtainable by ground. This is really helpful when a disaster strikes and ground crew are unable to get to those in need of help. The Quadcopters provide a faster way for allowing those people to use their cell phones from the WiFi signals. The Quadcopters kit will run you about $400, batteries are not included.
[Source] http://www.pcpro.co.uk/news/248860/flying-robots-to-provide-wifi-in-disaster-zones.html
