FIELD: automatic control, computer and television engineering; robotics, telemechanics, three-dimensional and stereoscopic TV sets, interactive computer games for remote input of two- and three- dimensional information in computer, robot, manipulator TV set, or any other controlled entity. SUBSTANCE: method involves variation of spatial coordinates of contactless optical mouse carrying optical radiation sources, determination of spatial coordinates of optical radiation sources by using optical scanning, input of spatial coordinates of contactless optical mouse into controlled entity as information. Device implementing proposed method has stationary transceiving unit 2 and contactless optical mouse easily displaced in space. Stationary transceiver unit has stationary optical radiation source 4, scanning receiving system 5, microprocessor unit 6, microprocessor-unit-to-controlled- entity interface 7. EFFECT: improved reliability of signal detection at ranges approaching critical ones; simplified design and reduced size of transceiver unit. 11 cl, 4 dwg
