This system has come at a cost of one billion dollars.

Each sensor has an accelerometer that measures tremors and algorithms that detect earthquakes.

When an earthquake is detected a signal is sent to a server in hundredths of a second.

The damage maps are sent via email to fire departments within minutes of the earthquake and are downloaded to battery-powered devices in case power is interrupted.

IoT standalone sensors are augmented by Zizmos smartphone apps Zizmos eQuake that are available free-of-charge for iOS and Android.

Every second that passes, thousands of messages are sent from the sensors to servers for analytics and alerting.

The text above is a summary, you can read full article here.