In an emergency situation where mobile networks are either down or overloaded and there’s no WiFi, cell phones are useless. Unlike land mobile radios, used by police and fire departments, they don’t have the ability to communicate directly with each other. Until now.
The Better Approach To Mobile Adhoc Networks (BATMAN) joins smartphones together in an ad-hoc, mesh network, capable of device to device communication. You can share files and even send messages with the right application.