Patent ID: 7436294

Claim:
A data-management system for disaster prevention, the data-management system comprising: a plurality of radio-frequency identification tags that are installed in a facility, each of the radio-frequency identification tags storing first data that is related to a status of a disaster that occurred in the facility, and a second data that is related to an escape path from the facility; a data processing apparatus that determines the escape path from the facility based on the first data; a first mobile terminal that sends the first data from a radio-frequency identification tag to the data processing apparatus, and makes the radio-frequency identification tag to store the second data returned from the data processing apparatus; a second mobile terminal that reads the second data from the radio-frequency identification tag, outputs the second data to a user of the second terminal, and causes the radio-frequency identification tag to store third data including an identifier of the user of the second mobile terminal and a current time when the second mobile terminal reads the second data from the radio-frequency identification tag; and a third mobile terminal that reads the third data from the radio-frequency identification tag and outputs the third data to a user of the third mobile terminal.