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In these years, disasters often occurred in Japan and abroad. When the disaster happen, general communication methods, e.g., cell phone, may not work well due to the damage of communication infrastructure or restriction of usage of communication resources. How to let users quickly confirm safety is a critically important problem after a disaster. Therefore, we propose a design of safety confirmation...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.