SAN FRANCISCO — A new mobile messaging application called FireChat is empowering nearby smartphone users to stay in touch even when there’s no cellular service or Internet connection.
In just two weeks since its release on the iPhone, FireChat already has provided a flicker of hope for people pining for more effective, secure and affordable ways to communicate. That’s because the free messaging app harnesses a technology called wireless mesh networking, which might someday allow a myriad of devices to connect like links in a chain.
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