Notification control device, notification control system, and notification control method

A notification control device comprising:

• an obtainer that obtains notification information relating to an operation performed by a device;
• a first notification controller that:
• sends a first notification control signal for causing a first device to provide a first notification indicating details of the notification information;
• obtains first response information to the first device that has provided the first notification;
• and determines whether the first response information is in response to the notification information;
• a second notification controller that:
• sends a second notification control signal for causing a second device to provide a second notification at substantially a same time as a time at which the first notification is provided, the second notification indicating the details of the notification information and being implemented in a form different from a form of the first notification;
• obtains second response information to the second device that has provided the second notification;
• and determines whether the second response information is in response to the notification information;
• and
• a canceller that sends a cancellation process signal for (a) cancelling the second notification when the first notification controller determines that the first response information is in response to the notification information and (b) cancelling the first notification when the second notification controller determines that the second response information is in response to the notification information.