Your Phone's Wi-Fi Hotspot Could Act As an SOS Beacon in a Disaster

Your Phone's Wi-Fi Hotspot Could Act As an SOS Beacon in a Disaster

Trapped under rubble, unable to move following a natural disaster, it would be easy to assume the worst. But soon the Wi-Fi hotspot on your phone may be able to help raise alarm—acting as an SOS beacon to guide rescuers your way.

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