Recently, Google revealed that it is working on an earthquake alert system that is built on
Essentially, Android smartphones are becomingmini seismometers. Vice President of Android Development Dave Burke posted on Twitter a video showing Los Angeles and the surrounding area immediately after the recent 4.5 magnitude earthquake. The yellow and red dots on the map indicate the locations of the P and S waves. They are used by seismologists for the early detection of earthquakes. Smartphones are able to detect the initial wave. After that, they send the location to the Google server.