Abstract: A communication method for communicating to a first user includes: obtaining and storing second position information indicating a position of a second user different from the first user and activity information indicating an activity of the second user, the second position information and the activity information being stored in association with each other; generating, based on the activity information, data that reproduces an activity of the second user, the data being data that, when output to a stimulus presenter, presents a stimulus for reproducing and communicating the activity of the second user; and outputting, in a target space to which the position indicated in the second position information belongs, the data generated based on the activity information associated with the second position information, to the stimulus presenter.

Abstract: A communication method includes: obtaining first position information indicating a position of a first user who is a target recipient of communication; obtaining second position information indicating a position of a second user different from the first user; determining a relative direction of the position indicated in the second position information with respect to the position indicated in the first position information; and communicating using a stimulus presenter capable of presenting a stimulus to the first user, the communicating including presenting a stimulus arriving toward the position indicated in the first position information from the relative direction determined, wherein the stimulus presented in the communicating corresponds to a stimulus generated at the position of the second user.

Abstract: An information notification method for notifying information by a modality which stimulates at least one of human five senses includes: by a computer, acquiring a current location of a notification target person; acquiring an activity intensity of the notification target person in the current location; determining, on the basis of the current location and the activity intensity, a first sort of modality that hinders an activity of the notification target person from a group of modalities that are available to notify the notification target person of the information; selecting a second sort of modality used to notify the notification target person of the information from among the modalities which are included in the group of modalities and are different from the first sort of modality; and notifying the notification target person of the information by the second sort of modality.