Japanese iOS users will be able to turn the notification system on from their mobile devices. If an earthquake hits, users will be alerted with a notification giving them information on the earthquake.
Japan launched its notification system in 2007. When tremors or earthquakes are measured, the service sends notifications out through an online system. As more information is gathered, including the earthquake’s epicenter, that data is also pushed out.
The notification system is a key part of Japan’s emergency response service, since the country is particularly vulnerable to earthquakes.