1. An information communication method for obtaining information from a subject, the information communication method comprising: setting an exposure time of an image sensor so that in an image obtained by capturing the subject by the image sensor, a plurality of bright lines corresponding to a plurality of exposure lines included in the image sensor appears according to a change in luminance of the subject; obtaining a bright line image, including the plurality of bright lines, by capturing the subject that changes in luminance by the image sensor with the set exposure time; and obtaining the information by demodulating data specified by a striped pattern of the plurality of bright lines included in the obtained bright line image, wherein the exposure time set in the setting is shorter than a first period, the first period is a second period of changing of luminance of the subject subtracted by a gap time between an exposure starting time of each of the plurality of exposure lines and an exposure starting time of an adjacent exposure line, the second period is a changing luminance period (i) between a timing from a high luminance to a low luminance and a timing from the low luminance to the high luminance, or (ii) between a timing from the low luminance to the high luminance and a timing of the high luminance to the low luminance.