| 摘要 |
PROBLEM TO BE SOLVED: To provide a restriction lifting system or the like making it possible to improve safety.SOLUTION: A restriction lifting system (1) in accordance with the present invention includes first equipment (3) that is incorporated in an object system and transmits identification information on inputted permission information, servers (6 and 7) that receive the identification information from the first equipment, output determination information on whether the permission information relevant to the identification information is valid, produce tentative authentication information on the basis of the determination information, and transmit the tentative authentication information, and second equipment (12) that receives the tentative authentication information from the server and displays the tentative authentication information. The first equipment receives the tentative authentication information from the server, receives input of reference information by referencing the tentative authentication information displayed by the second equipment, and determines whether the received tentative authentication information and inputted reference information are consistent with each other. If the tentative authentication information and reference information are consistent with each other, the first equipment lifts a restriction imposed on the object device. |
