An information communication method that enables communication between various devices includes: (SK71) determining a plurality of patterns of a change in luminance, by modulating a respective plurality of signals to be transmitted; and (SK72) transmitting, by each of a plurality of light emitters changing in luminance according to any one of the determined plurality of patterns of the change in luminance, a signal corresponding to the pattern, wherein in the transmitting (SK72), each of the plurality of light emitters changes in luminance at a different frequency so that light of one of two types of light different in luminance is output per a time unit predetermined for the light emitter and that the time unit predetermined for the light emitter is different from a time unit predetermined for an other one of the plurality of light emitters.