(CNN) -- Google is turning millions of Android phones into mini-seismometers.
The company's new earthquake tracking system uses your phone's accelerometer to detect possible quakes.
You location is then sent to Google, which will process data from other phones, and then, if needed, send out an alert to everyone in the area.
This all happens at lightning speed to give you a few minutes or few seconds to take cover.
Apple's iPhones don't have alerts built into the device but use specific apps to send out earthquake detection warnings.