Earthquake Network is a research project started in January 2013 which develops a crowdsourced Earthquake Early Warning system based on networks of smartphones. As of today, more than 3.9 million people took part in the Earthquake Network project and the network has sent more than 970 early warnings.
The idea is to use the accelerometer on-board smartphones to detect in real-time the shaking induced by an earthquake. When an earthquake is detected, a warning is issued toward all the smartphones in the network. If you are not too close to the epicenter, you can receive the alert in advance and you can take cover before you are reached by the damaging waves of the earthquake.
To be part of the network and to receive the real time alerts, please install the Earthquake Network app from Google Play.