After the Great East Japan Earthquake in March 2011 and the Kumamoto Earthquake in April 2016, there has been progress in safety confirmation services provided by information technology (IT) companies and the public and private installation of Wi-Fi in more locations to keep lines of communication open in times of emergency.
A recent example is a new safety confirmation service from Line Corp., the operators of a free messaging application by the same name, which was released ahead of the sixth anniversary of the earthquake and tsunami disaster. The new Line damage report function on the messaging app sends a message from the company's official account to all users with information about a disaster and asks recipients to select one of three reply choices: "I'm hurt/in trouble," "I'm safe," or "I am not in the area." It then prompts users to post their responses on their "timeline" for their friends and family to see. The company has yet to use the new function, but the new service is attracting attention for its expected effectiveness, as Line app has roughly 66 million users nationwide.