Facebook’s Safety Check feature, which the social media giant launched in October last year, sends notifications to users who are in the affected zone. In the wake of the Nepal Earthquake, Facebook sent out notifications to users who were in the crisis zone. The notification asks users to respond with a simple click.
Users can click the “I’m safe” button or “I’m not in the area”. You can even indicate the status of your friends in your network, by marking them safe if you know they are OK.
— Pratistha Thapa (@thapapratistha) April 25, 2015
Similar to Facebook, even Google has launched a Person Finder feature, that allows individuals to track and report missing people in the case of natural disasters.