Everyone with an Android smartphone will now help Google accurately report when there’s an earthquake.
Starting Tuesday, Android phones running operating system 5.0 and above will pick up certain seismic wave activity and report it to Google. Google will then use that data in search results and directly warn Android users in California.
Google will use the phones’ built-in accelerometers, which orient the compass and stargazing apps, in a new way. Now the sensor will pick up earthquake activity, too, and report it to Google.
When you look up “earthquake” or “earthquake near me,” Google will use the accelerometer data to quickly report back information about the quake. The information will be pooled together and sent to a dedicated server to let Google know a lot of people in a certain area are experiencing some unusual movement. So if your phone erroneously detects some seismic movement, Google should notice that it was only your phone flagging a potential quake.
While Google will be collecting data from all Android phones worldwide, only users in California will get notifications directly to their phones starting Tuesday.
Android is using the ShakeAlert notification system from the U.S. Geological Survey to notify Californians about a recently detected quake. If you have an Android in California you will no longer need to have a separate ShakeAlert-powered app on your phone to be notified. Like those other apps, Google will use phone data as well as information from the USGS’ ground motion sensors. While we can’t predict earthquakes, people can be alerted as soon as one strikes nearby so they have a bit of notice before they feel any shaking.