Weather app uses mesh networking to send emergency alerts without cell signal

A mobile phone can be a fantastic resource in an emergency, but what good is it without signal? IBM and The Weather Company are trying to tackle this problem using a technology known as mesh networking. An update to The Weather Company’s Android app uses phones’ built-in radios to send alerts about natural disasters and extreme weather from device to device — getting the message out, even when there’s no signal.The mesh networking update will be rolling out to The Weather