Optical and electronic subsystems for spacecraft and artificial intelligence have been under development since 1955. Sophisticated biomedical sensors have been developed to use on animals at a distance without physical contact. The same equipment has been used to test environmental factors on human sensory organs. Laser is used in biomedical displays to pick up brain signals and convert them to sound and color or even music. With current laser techniques verbal and aural communication is possible between any two points on earth with video and via satellite.