Your smartphone's WiFi hotspot might double as a disaster rescue beacon

When disasters strike, communication services tend to go down; you can't simply call for help or share your location online. However, engineers at the Fraunhofer Institute for Applied Information Technology have found a way to use a smartphone as a rescue beacon when there aren't any available networks. The researchers have written a victim app that inserts an SOS alert into the name of the phone's WiFi hotspot.

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