Learn in the textbookOnline Government Procedures, the Number System, and Disaster-Prevention Information
DefinitionThe emergency alert (緊急速報) is a system for broadcasting (一斉配信) disaster information, such as on earthquakes and tsunamis, and evacuation information to every mobile phone in a target area at once.
ExplanationUsing mobile carriers' networks, it delivers messages such as the Japan Meteorological Agency's earthquake early warnings and tsunami warnings, and local governments' evacuation information. Any compatible device in the target area receives them, with no advance registration by the user.
AnalogyIt is like an alarm bell ringing in everyone's hand at the same moment. It reaches the people in the area without knowing who is there.