An output device for outputting a tactile stimulus to a user comprising: a plurality of output units (310a, 310b, 310c, 310d, 310e, 310f, 310g, 310h, 310i) configured to output the tactile stimulus to the user; a controller configured to conduct, on a basis of a common signal to be employed by each of a plurality of output devices (30a, 30b, 30c) for outputting the tactile stimulus to a respective user of the output device, wherein the plurality of output devices (30a, 30b, 30c) includes the output device, an output control by controlling the plurality of output units (310a, 310b, 310c, 310d, 310e, 310f, 310g, 310h, 310i), wherein the common signal includes an information specifying an output unit of the plurality of output units (310a, 310b, 310c, 310d, 310e, 310f, 310g, 310h, 310i) serving as the output unit to output the tactile stimulus to the user of the output device, wherein in each of the plurality of output devices (30a, 30b, 30c) the controller is further configured to generate a control signal derived by adapting the information specifying the output unit on a basis of a positional information of the output device, the positional information being acquired by a sensor unit, wherein the controller is further configured to conduct the output control on a basis of the control signal, wherein the positional information includes directional information, and the directional information includes a relative direction relative to a display device, wherein the controller is further configured to calculate the relative direction on a basis of a reference direction, wherein the controller is configured to calculate the relative direction on a basis of near-infrared light radiated from an illumination device disposed on the display device, and wherein the controller is configured to calculate the relative direction on a basis of the reference direction and acquired angular velocity information; and an illuminator that is disposed at a periphery of the output device and is configured to radiate near-infrared light, wherein, on a basis of the reference direction and the relative direction, the controller is configured to make the illuminator radiate near-infrared to thereby achieve a stable operation of the plurality of output devices in case the near-infrared light radiated from the illumination device is shut off by anyone of the other users. a plurality of output units (310a, 310b, 310c, 310d, 310e, 310f, 310g, 310h, 310i) configured to output the tactile stimulus to the user; a controller configured to conduct, on a basis of a common signal to be employed by each of a plurality of output devices (30a, 30b, 30c) for outputting the tactile stimulus to a respective user of the output device, wherein the plurality of output devices (30a, 30b, 30c) includes the output device, an output control by controlling the plurality of output units (310a, 310b, 310c, 310d, 310e, 310f, 310g, 310h, 310i), wherein the common signal includes an information specifying an output unit of the plurality of output units (310a, 310b, 310c, 310d, 310e, 310f, 310g, 310h, 310i) serving as the output unit to output the tactile stimulus to the user of the output device, wherein in each of the plurality of output devices (30a, 30b, 30c) the controller is further configured to generate a control signal derived by adapting the information specifying the output unit on a basis of a positional information of the output device, the positional information being acquired by a sensor unit, wherein the controller is further configured to conduct the output control on a basis of the control signal, wherein the positional information includes directional information, and the directional information includes a relative direction relative to a display device, wherein the controller is further configured to calculate the relative direction on a basis of a reference direction, wherein the controller is configured to calculate the relative direction on a basis of near-infrared light radiated from an illumination device disposed on the display device, and wherein the controller is configured to calculate the relative direction on a basis of the reference direction and acquired angular velocity information; and an illuminator that is disposed at a periphery of the output device and is configured to radiate near-infrared light, wherein, on a basis of the reference direction and the relative direction, the controller is configured to make the illuminator radiate near-infrared to thereby achieve a stable operation of the plurality of output devices in case the near-infrared light radiated from the illumination device is shut off by anyone of the other users.