Why was the first tv remote control invented?

The first TV remote control, called "Lazy Bones," was developed in 1950 by Zenith Electronics Corporation (then known as Zenith Radio Corporation). Lazy Bones used a cable that ran from the TV set to the viewer. In 1956, Zenith's Dr. Robert Adler suggested using "ultrasonic's," that is, high-frequency sound, beyond the range of human hearing. He was assigned to lead a team of engineers to work on the first use of ultrasonic's technology in the home as a new approach for a remote control.